## 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 after 200 grams of water were added to the 24%-solution of alcohol, the strength of the solution decreased by one-thi
by VJesus12 »
If after 200 grams of water were added to the 24%-solution of...
0
Last post by VJesus12
Thu May 13, 2021 7:05 am
There are three types of zinc-aluminum alloy, $$M_1, M_2$$ and $$M_3,$$ with $$10\%, 40\%$$ and $$70\%$$ concentration
by VJesus12 »
There are three types of zinc-aluminum alloy, $$M_1, M_2$$ and...
0
Last post by VJesus12
Thu May 13, 2021 7:02 am
If $$x$$ and $$y$$ are positive numbers and $$z = xy^2,$$ a $$50$$ percent increase in $$x$$ and a $$20$$ percent decrea
by VJesus12 »
If $$x$$ and $$y$$ are positive numbers and $$z = xy^2,$$ a $$50$$...
0
Last post by VJesus12
Thu May 13, 2021 6:56 am
If integer $$k$$ is equal to the sum of all even multiples of $$15$$ between $$295$$ and $$615,$$ what is the greatest
by VJesus12 »
If integer $$k$$ is equal to the sum of all even multiples of $$15$$...
0
Last post by VJesus12
Thu May 13, 2021 6:51 am
Line segments $$AB$$ and $$CD$$ are of equal length and perpendicular bisectors of one another. If a line segment is dra
by VJesus12 »
Line segments $$AB$$ and $$CD$$ are of equal length and perpendicular...
0
Last post by VJesus12
Thu May 13, 2021 6:48 am
A cylinder of height $$h$$ is $$\dfrac34$$ of water. When all of the water is poured into an empty cylinder whose radius
by VJesus12 »
A cylinder of height $$h$$ is $$\dfrac34$$ of water. When all of the...
0
Last post by VJesus12
Thu May 13, 2021 6:43 am
At the end of year $$X,$$ automobile installment credit accounted for $$36\%$$ of all outstanding consumer installment
by VJesus12 »
At the end of year $$X,$$ automobile installment credit accounted for...
0
Last post by VJesus12
Thu May 13, 2021 6:41 am
If $$x$$ is an integer, then $$x(x - 1)(x - k)$$ must be evenly divisible by three when $$k$$ is any of the following
by VJesus12 »
If $$x$$ is an integer, then $$x(x - 1)(x - k)$$ must be evenly...
0
Last post by VJesus12
Thu May 13, 2021 6:38 am
Four concentric circles share the same center. The smallest circle has a radius of $$1$$ inch. For $$n$$ greater than
by VJesus12 »
Four concentric circles share the same center. The smallest circle...
0
Last post by VJesus12
Thu May 13, 2021 6:36 am
If $$(25\sqrt5)^x=(\sqrt[3]{5})^{x+1},$$ what does $$x$$ equal
by VJesus12 »
If $$(25\sqrt5)^x=(\sqrt {5})^{x+1},$$ what does $$x$$ equal (A)...
0
Last post by VJesus12
Thu May 13, 2021 6:31 am
If the range of the six numbers $$4, 3, 14, 7, 10$$ and $$x$$ is $$12,$$ what is the difference between the greatest
by VJesus12 »
If the range of the six numbers $$4, 3, 14, 7, 10$$ and $$x$$ is...
0
Last post by VJesus12
Thu May 13, 2021 6:27 am
The total cost for Company $$X$$ to produce a batch of tools is $$\10,000$$ plus $$\3$$ per tool. Each tool sells for
by Vincen »
The total cost for Company $$X$$ to produce a batch of tools is...
0
Last post by Vincen
Thu May 13, 2021 6:22 am
Find the range of values of $$x$$ that satisfy the inequality $$(x-3)^2(x+1)^5(x^2-9)<0.$$
by Vincen »
Find the range of values of $$x$$ that satisfy the inequality...
0
Last post by Vincen
Thu May 13, 2021 6:16 am
A necklace is made by stringing $$N$$ individual beads together in the repeating pattern red bead, green bead, white bea
by Vincen »
A necklace is made by stringing $$N$$ individual beads together in...
0
Last post by Vincen
Thu May 13, 2021 6:12 am
Bill has a set of $$6$$ black cards and a set of $$6$$ red cards. Each card has a number from $$1$$ through $$6,$$ such
by Vincen »
Bill has a set of $$6$$ black cards and a set of $$6$$ red cards....
0
Last post by Vincen
Thu May 13, 2021 6:09 am
In how many ways can 3 different prizes be distributed among 5 students when no student gets all the prizes?
by Vincen »
In how many ways can 3 different prizes be distributed among 5...
0
Last post by Vincen
Thu May 13, 2021 6:05 am
Peter and Tom shared the driving on a certain trip. If Peter and Tom both drove for the same amount of time, but Peter
by Vincen »
Peter and Tom shared the driving on a certain trip. If Peter and Tom...
0
Last post by Vincen
Thu May 13, 2021 6:03 am
Chelsea has a bookshelf consisting of ten classics: four Russian novels, three British novels, two French novels, and
by AAPL »
Magoosh Chelsea has a bookshelf consisting of ten classics: four...
0
Last post by AAPL
Thu May 13, 2021 6:01 am
The greatest common factor of $$16$$ and the positive integer $$n$$ is $$4,$$ and the greatest common factor of $$n$$
by Vincen »
The greatest common factor of $$16$$ and the positive integer $$n$$...
0
Last post by Vincen
Thu May 13, 2021 6:01 am
If $$S_n$$ is the sum of first $$n$$ terms of a certain sequence and $$S_n = n (n^2 + 1)$$ for all positive integers.
by Vincen »
If $$S_n$$ is the sum of first $$n$$ terms of a certain sequence and...
0
Last post by Vincen
Thu May 13, 2021 5:58 am
A certain kennel will house 24 dogs for 7 days. Each dog requires 10 ounces of dog food per day. If the kennel purchases
by Vincen »
A certain kennel will house 24 dogs for 7 days. Each dog requires 10...
0
Last post by Vincen
Thu May 13, 2021 5:54 am
If Susan takes $$9$$ seconds to run $$y$$ yards, how many minutes will it take her to run $$x$$ yards at the same rate?
by Vincen »
If Susan takes $$9$$ seconds to run $$y$$ yards, how many minutes...
0
Last post by Vincen
Thu May 13, 2021 5:52 am
Region $$R$$ is a square in the $$xy$$-plane with vertices $$J = (-1, -2), K = (-1, 4), L = (5, 4),$$ and
by Vincen »
Region $$R$$ is a square in the $$xy$$-plane with vertices $$J = (-1,... 0 Last post by Vincen Thu May 13, 2021 5:48 am A retail appliance store priced a video recorder at 20 percent above the wholesale cost of 200. If a store employee app by Vincen » A retail appliance store priced a video recorder at 20 percent above... 0 Last post by Vincen Thu May 13, 2021 5:42 am \(A$$ and $$B$$ are two laborers who have been given the task to build a house. $$A$$ can build a house in $$20$$ days
by Vincen »
$$A$$ and $$B$$ are two laborers who have been given the task to...
0
Last post by Vincen
Thu May 13, 2021 5:40 am
If k is an odd integer, which of the following must be an even integer?
by AAPL »
Magoosh If k is an odd integer, which of the following must be an...
0
Last post by AAPL
Thu May 13, 2021 5:38 am
0
Last post by Vincen
Thu May 13, 2021 5:35 am
If $$\dfrac{m}{n} = \dfrac38$$ then which of the following cannot be the value of $$n - m ?$$
by Vincen »
If $$\dfrac{m}{n} = \dfrac38$$ then which of the following cannot be...
0
Last post by Vincen
Thu May 13, 2021 5:33 am
A vending machine is designed to dispense 8 ounces of coffee into a cup. After a test that recorded the number of ounces
by AAPL »
GMAT Prep 7.51 8.22 7.86 8.36 8.09 7.83 8.30 8.01 7.73 8.25 7.96...
1
Last post by [email protected]
Thu May 13, 2021 5:18 am
In a certain game of archery the points in each round for the first, second, third and fourth position were 7, 5, 3, 2.
by BTGmoderatorLU »
Source: Manhattan Prep In a certain game of archery the points in...
1
Last post by regor60
Wed May 12, 2021 11:34 am
A quadrilateral has a perimeter of 16. Which of the following alone would provide sufficient information to determine
by BTGmoderatorLU »
Source: Magoosh A quadrilateral has a perimeter of 16. Which of the...
0
Last post by BTGmoderatorLU
Wed May 12, 2021 10:02 am
How many different positive integers having six digits are there, where exactly on of the digits is a 3, exactly two
by BTGmoderatorDC »
How many different positive integers having six digits are there,...
1
Last post by swerve
Wed May 12, 2021 4:28 am
If S is the sum of the reciprocals of the consecutive integers from 91 to 100, inclusive, which of the following is less
by AAPL »
GMAT Prep If S is the sum of the reciprocals of the consecutive...
0
Last post by AAPL
Tue May 11, 2021 5:10 pm
In order to complete a reading assignment on time, Terry planned to read 90 pages per day. However, she read only 75 pag
by M7MBA »
In order to complete a reading assignment on time, Terry planned to...
3
Last post by Brian_90Web
Tue May 11, 2021 1:30 am
Que: How many different prime factors of $$4^5+4^6+4^7$$ are there?
by [email protected] Revolution »
Que: How many different prime factors of $$4^5+4^6+4^7$$ are there?...
0
Last post by [email protected] Revolution
Mon May 10, 2021 9:26 pm
Que: If n is positive integers, what is the unit digit of $$\left(3^{4n+1}\right)\left(9^{19}\right)$$?
by [email protected] Revolution »
Que: If n is positive integers, what is the unit digit of...
1
Last post by [email protected] Revolution
Mon May 10, 2021 9:20 pm
Geometry, Probability
by swerve »
2014-10-28_2033.png $$ABCD$$ is a square inscribed in a circle and...
0
Last post by swerve
Mon May 10, 2021 4:56 pm
Probability
by swerve »
If a jury of $$12$$ people is to be selected randomly from a pool of...
0
Last post by swerve
Mon May 10, 2021 4:43 pm
In how many different ways can 3 fiction books and 3 non-fiction books be arranged in a row of 6 books on a shelf such
by BTGmoderatorLU »
Source: Magoosh In how many different ways can 3 fiction books and 3...
1
Last post by [email protected]
Mon May 10, 2021 6:45 am
In a certain class consisting of 36 students, some boys and some girls, exactly 1/3....
by Vincen »
In a certain class consisting of 36 students, some boys and some...
1
Last post by [email protected]
Mon May 10, 2021 6:44 am
In a certain history class of 17 juniors and seniors, each junior has written 2 book reports and each senior
by Vincen »
In a certain history class of 17 juniors and seniors, each junior has...
1
Last post by [email protected]
Mon May 10, 2021 6:43 am
Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters...
by Vincen »
Seven pieces of rope have an average (arithmetic mean) length of 68...
1
Last post by [email protected]
Mon May 10, 2021 6:43 am
Seb's watch gains 5 seconds in every 3 hours, whereas Lewis' watch losses 10 seconds in every 2 hours. If both watches
by AAPL »
E-GMAT Seb's watch gains 5 seconds in every 3 hours, whereas Lewis'...
0
Last post by AAPL
Mon May 10, 2021 5:49 am
A set consists of n positive integers arranged in decreasing order of value. If the difference between any two adjacent
by AAPL »
E-GMAT A set consists of n positive integers arranged in decreasing...
0
Last post by AAPL
Mon May 10, 2021 5:41 am
Que: If x and y are different prime numbers greater than 20 but less than 30, what is the value of x + y?
by [email protected] Revolution »
Que: If x and y are different prime numbers greater than 20 but less...
1
Last post by [email protected] Revolution
Sun May 09, 2021 11:59 pm
In a certain sequence, the term $$x_n$$ is given by the formula
by Vincen »
In a certain sequence, the term $$x_n$$ is given by the formula...
0
Last post by Vincen
Sun May 09, 2021 2:44 pm
If $$y = (x â€“ 5)^2 + (x + 1)^2 â€“ 6,$$ then y is least when $$x =$$
by Vincen »
If $$y = (x - 5)^2 + (x + 1)^2 - 6,$$ then y is least when $$x =$$ A....
0
Last post by Vincen
Sun May 09, 2021 2:32 pm
At a certain school, the ratio of the number of second graders to the number of fourth-graders is 8 to 5, and the....
by Vincen »
At a certain school, the ratio of the number of second graders to the...
0
Last post by Vincen
Sun May 09, 2021 2:28 pm
If $$mn \neq 0$$ and $$25$$ percent of $$n$$ equals $$37\frac{1}{2}$$ percent of $$m,$$ what is the value of $$\dfrac{12 by Vincen » If \(mn \neq 0$$ and $$25$$ percent of $$n$$ equals $$37\frac{1}{2}$$...
0
Last post by Vincen
Sun May 09, 2021 2:21 pm
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