## Problem Solving

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OFFICIAL GUIDE QUESTION LIBRARY
by beatthegmat »
Join the discussion as you work through your Official Guide and gain...
2
Last post by gentvenus
Wed Sep 09, 2020 12:49 pm
If d is the standard deviation x, y, and z, what is the standard deviation of x + 5, y + 5, z + 5 ?
by BTGmoderatorDC »
If d is the standard deviation x, y, and z, what is the standard...
0
Last post by BTGmoderatorDC
Tue Jan 25, 2022 5:48 pm
Al and Ben are drivers for SD Trucking Company. One snowy day, Ben left SD at 8:00 a.m. heading east and Al left SD at
by AAPL »
Official Guide Al and Ben are drivers for SD Trucking Company. One...
1
Last post by [email protected]
Tue Jan 25, 2022 6:32 am
How many diagonals does a polygon with 18 sides have if three of its vertices, which are adjacent to each other, do not
by BTGmoderatorDC »
How many diagonals does a polygon with 18 sides have if three of its...
0
Last post by BTGmoderatorDC
Mon Jan 24, 2022 6:33 pm
What is the probability of rolling three six-sided dice, and getting a different number on each die?
by BTGmoderatorDC »
What is the probability of rolling three six-sided dice, and getting...
1
Last post by [email protected]
Mon Jan 24, 2022 7:12 am
Dave’s quiz scores are 60, 90, and 80. What is the score Dave would need on his next quiz to increase his overall averag
by Gmat_mission »
Dave’s quiz scores are 60, 90, and 80. What is the score Dave would...
1
Last post by [email protected]
Sun Jan 23, 2022 7:33 am
If the crime rate in a certain region dropped by 28% last year to a rate of 500 crimes per 100,000 citizens, what was
by Gmat_mission »
If the crime rate in a certain region dropped by 28% last year to a...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:50 am
The figure above shows $$2$$ circles. The larger circle has center $$A,$$ radius $$R\, \text{cm},$$ and is inscribed in
by Gmat_mission »
2019-09-21_1753.png The figure above shows $$2$$ circles. The larger...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:42 am
The probability that Maria will eat breakfast on any given day is 0.5. The probability that Maria will wear a sweater on
by Gmat_mission »
The probability that Maria will eat breakfast on any given day is...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:34 am
If $$a$$ and $$b$$ represent positive single digits in the correctly worked computation above, what is the value of the
by Gmat_mission »
$$22$$ $$a3$$ $$+4b$$ ___ $$90$$ If $$a$$ and $$b$$ represent...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:30 am
Three friends divided a bag of chocolates so that David received a fifth of the number of chocolates that Fouad did, and
by Gmat_mission »
Three friends divided a bag of chocolates so that David received a...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:24 am
If $$a^2b > 1$$ and $$b < 2,$$ which of the following could be the value of $$a?$$
by Gmat_mission »
If $$a^2b > 1$$ and $$b < 2,$$ which of the following could be...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:20 am
If $$a < 0$$ and $$b < c,$$ which of the following must be true?
by Gmat_mission »
If $$a < 0$$ and $$b < c,$$ which of the following must be...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:14 am
Mary prepared $$x$$ pounds of pasta for the $$y$$ people expected to attend a banquet. If only $$z$$ of these $$y$$ peop
by Gmat_mission »
Mary prepared $$x$$ pounds of pasta for the $$y$$ people expected to...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:11 am
Right triangle DEF has a hypotenuse of less than 7. What is the maximum possible area of DEF, if the area of DEF is an
by BTGmoderatorDC »
Right triangle DEF has a hypotenuse of less than 7. What is the...
0
Last post by BTGmoderatorDC
Fri Jan 21, 2022 9:21 pm
The figure above represents a window, with the shaded regions representing the openings for the glass. If all line
by BTGmoderatorLU »
Source: GMAT Paper Tests Untitled (7).png The figure above...
0
Last post by BTGmoderatorLU
Fri Jan 21, 2022 6:00 pm
At a certain carpet factory, if carpeting of width 10 feet is moving continuously through a dryer at a constant speed
by BTGmoderatorDC »
At a certain carpet factory, if carpeting of width 10 feet is moving...
0
Last post by BTGmoderatorDC
Thu Jan 20, 2022 6:01 pm
Sid intended to type a seven-digit number, but the two 3's he meant to type did not appear. What appeared instead was
by BTGmoderatorDC »
Sid intended to type a seven-digit number, but the two 3's he meant...
1
Last post by [email protected]
Thu Jan 20, 2022 7:04 am
Highmont private school polled the graduating class of 125 for the musical genres they listen to. 88% indicated at least
by AAPL »
Magoosh Highmont private school polled the graduating class of 125...
0
Last post by AAPL
Wed Jan 19, 2022 7:05 pm
If the area of the outer square is $$4x^2$$, then the area of the inner square is
by AAPL »
Magoosh squareincircleinsquare_figure.PNG If the area of the outer...
0
Last post by AAPL
Wed Jan 19, 2022 6:49 pm
If x < y, which of the following must be true?
by BTGmoderatorDC »
If x < y, which of the following must be true? (A) x < y^2 (B)...
1
Last post by [email protected]
Wed Jan 19, 2022 9:44 am
Seven children — A, B, C, D, E, F, and G — are going to sit in seven chairs in a row. The children C & F have to sit
by BTGmoderatorDC »
Seven children - A, B, C, D, E, F, and G - are going to sit in seven...
0
Last post by BTGmoderatorDC
Tue Jan 18, 2022 5:37 pm
Mixture Problems
by swerve »
If a certain concrete mixture contains gravel, water, and sand in a 1...
0
Last post by swerve
Mon Jan 17, 2022 4:27 pm
Algebra
by swerve »
A survey of potential voters was conducted to determine the...
0
Last post by swerve
Mon Jan 17, 2022 4:07 pm
two strings have equal length. One of the strings is shaped, with no overlap, into a circle. The other string is shaped,
by BTGmoderatorLU »
Source: GMAT Prep Two strings have equal length. One of the strings...
3
Last post by regor60
Mon Jan 17, 2022 12:52 pm
Amy deposited $1,000 into an account that earns 8% annual interest compounded every 6 months. Bob deposited$1,000...
by M7MBA »
Amy deposited \$1,000 into an account that earns 8% annual interest...
0
Last post by M7MBA
Sun Jan 16, 2022 2:02 pm
If $$c\ne -5,$$ then $$\dfrac{5ab+abc}{abc^2+10abc+25ab}$$ is equivalent to which of the following?
by M7MBA »
If $$c\ne -5,$$ then $$\dfrac{5ab+abc}{abc^2+10abc+25ab}$$ is...
0
Last post by M7MBA
Sun Jan 16, 2022 12:11 pm
If $$y=(x-5)^2+(x+1)^2-6,$$ then $$y$$ is least when $$x =$$
by M7MBA »
If $$y=(x-5)^2+(x+1)^2-6,$$ then $$y$$ is least when $$x =$$ A. -2 B....
0
Last post by M7MBA
Sun Jan 16, 2022 12:06 pm
At what simple annual interest rate must $$\2,500$$ be invested if it is to earn $$\225$$ in interest in one year?
by M7MBA »
At what simple annual interest rate must $$\2,500$$ be invested if...
1
Last post by [email protected]
Sat Jan 15, 2022 7:56 am
Each bead in an urn is marked with a distinct positive integer and colored according to that integer’s remainder after
by M7MBA »
Each bead in an urn is marked with a distinct positive integer and...
0
Last post by M7MBA
Fri Jan 14, 2022 9:22 am
At a certain school, the ratio of the number of second graders to the number of fourth-graders is 8 to 5, and the ratio
by M7MBA »
At a certain school, the ratio of the number of second graders to the...
0
Last post by M7MBA
Fri Jan 14, 2022 9:19 am
A co. will select 2 of the 6 candidates available to work in 2 different positions in the Tech team and 3 of the 7
by BTGmoderatorDC »
A co. will select 2 of the 6 candidates available to work in 2...
1
Last post by swerve
Fri Jan 14, 2022 5:50 am
For a certain integer $$x,$$ the units digit of $$(x+2)^2$$ is $$9.$$ Which of the following could be the units digit of
by VJesus12 »
For a certain integer $$x,$$ the units digit of $$(x+2)^2$$ is $$9.$$...
1
Last post by swerve
Fri Jan 14, 2022 5:38 am
In Cliff’s impressive rock collection, there are half as many igneous rocks as sedimentary rocks. Of the igneous rocks,
by M7MBA »
In Cliff’s impressive rock collection, there are half as many...
0
Last post by M7MBA
Thu Jan 13, 2022 12:25 pm
A certain consulting firm employs 8 men and 4 women. In March, 3 employees are selected at random to represent the compa
by M7MBA »
A certain consulting firm employs 8 men and 4 women. In March, 3...
0
Last post by M7MBA
Thu Jan 13, 2022 12:22 pm
In a certain history class of 17 juniors and seniors, each junior has written 2 book reports and each senior has written
by VJesus12 »
In a certain history class of 17 juniors and seniors, each junior has...
1
Last post by [email protected]
Thu Jan 13, 2022 8:31 am
If $$x$$ is a negative integer and $$2 < x^2 < 36,$$ what is the least possible value of $$|2x + 11|?$$
by VJesus12 »
If $$x$$ is a negative integer and $$2 < x^2 < 36,$$ what is...
0
Last post by VJesus12
Thu Jan 13, 2022 5:07 am
There are $$50$$ children in $$2nd$$ grade at Venn Middle School. $$40\%$$ of those kids play only soccer and $$30\%$$
by VJesus12 »
There are $$50$$ children in $$2nd$$ grade at Venn Middle School....
0
Last post by VJesus12
Thu Jan 13, 2022 5:05 am
All the homes for sale in a certain community are either colonial or ranch style, and either white or blue. $$40\%$$ of
by VJesus12 »
All the homes for sale in a certain community are either colonial or...
0
Last post by VJesus12
Thu Jan 13, 2022 5:02 am
A set of data consists of the terms {2, 8, 13, 15, x}. If the range of the set is 2x, which of the following could be
by BTGmoderatorDC »
A set of data consists of the terms {2, 8, 13, 15, x}. If the range...
0
Last post by BTGmoderatorDC
Wed Jan 12, 2022 10:38 pm
Under a certain company's medical insurance plan, the amount an employee must pay for medical expenses consists of
by BTGmoderatorLU »
Source: GMAT Prep Under a certain company's medical insurance plan,...
0
Last post by BTGmoderatorLU
Wed Jan 12, 2022 5:36 pm
Last month, company $$X$$ sold three-quarters of the widgets it produced, including two-thirds of its curved widgets. If
by VJesus12 »
Last month, company $$X$$ sold three-quarters of the widgets it...
0
Last post by VJesus12
Wed Jan 12, 2022 10:54 am
Paul drove 50 miles north, then changed direction and drove 120 miles east. At the end of this trip, how far was he from
by VJesus12 »
Paul drove 50 miles north, then changed direction and drove 120 miles...
0
Last post by VJesus12
Wed Jan 12, 2022 10:50 am
A marketing survey of Anytown found that the ratio of trucks to sedans to motorcycles was 3:7:2, respectively. Given
by VJesus12 »
A marketing survey of Anytown found that the ratio of trucks to...
0
Last post by VJesus12
Wed Jan 12, 2022 10:47 am
A number is said to be prime saturated if the product of all the different positive prime factors of $$n$$ is less than
by VJesus12 »
A number is said to be prime saturated if the product of all the...
0
Last post by VJesus12
Wed Jan 12, 2022 10:43 am
If a square is inscribed in a circle that, in turn, is inscribed in a larger square, what is the ratio of the perimeter
by VJesus12 »
If a square is inscribed in a circle that, in turn, is inscribed in a...
0
Last post by VJesus12
Wed Jan 12, 2022 10:40 am
The line represented by the equation $$y = -2 x + 6$$ is the perpendicular bisector of the line segment $$AB.$$ If $$A$$
by VJesus12 »
The line represented by the equation $$y = -2 x + 6$$ is the...
0
Last post by VJesus12
Wed Jan 12, 2022 10:37 am
Brent is 18 years younger than Justin. If in 5 years Brent will be half as old as Justin, how old was Justin 5 years ago
by Vincen »
Brent is 18 years younger than Justin. If in 5 years Brent will be...
1
Last post by [email protected]
Wed Jan 12, 2022 10:33 am
A certain state legislature consists of 124 members, each of whom is either a Democrat or a Republican. If there are 18
by Vincen »
A certain state legislature consists of 124 members, each of whom is...
1
Last post by [email protected]
Wed Jan 12, 2022 10:32 am
In a certain class consisting of 36 students, some boys and some girls, exactly 1/3 of the boys and exactly 1/4 of the
by Vincen »
In a certain class consisting of 36 students, some boys and some...
1
Last post by [email protected]
Wed Jan 12, 2022 10:30 am