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Re: If a and b are positive integers

If a and b are positive integers is a/b < 9/11? A)a/b < 0.818 B)b/a > 1.223 oa D Solution: Question Stem Analysis: We need to determine whether a/b < 9/11. Notice that 9/11 = 0.818181…. Statement One Alone: Since a/b < 0.818, it’s less than 0.818181... = 9/11. Statement one alone is sufficient. Sta...

by [email protected]

Sat May 08, 2021 10:33 am
Forum: Data Sufficiency
Topic: If a and b are positive integers
Replies: 6
Views: 5020

Re: In a real estate office that employs n salespeople, f of the

In a real estate office that employs n salespeople, f of them are females and x of the females are new employees. What is the value of n ? (1) If an employee were randomly selected from the n employees, the probability of selecting a female would be 2/3. (2) If an employee were randomly selected fr...


Re: Robin invested a total of $12,000 in two investments, X and Y, so that

Robin invested a total of $12,000 in two investments, X and Y, so that the investments earned the same amount of simple annual interest. How many dollars did Robin invest in investment Y ? (1) Investment X paid 3 percent simple annual interest, and investment Y paid 6 percent simple annual interest...


Re: Square ABCD is inscribed in circle O. What is the area of square region ABCD?

Square ABCD is inscribed in circle O. What is the area of square region ABCD? (1) The area of circular region O is 64π. (2) The circumference of circle O is 16π. OA D Source: Official Guide Solution: Question Stem Analysis: We need to determine the area of square region ABCD, which is inscribed in ...


Re: George has a total of B books in his library

George has a total of B books in his library, 25 of which are hardcover fiction books. What is the value of B? (1) 40 of the B books are fiction and the rest are nonfiction (2) 60 of the B books are hardcovers and the rest are paperbacks Official Guide question Answer: E Solution: Question Stem Ana...

by [email protected]

Sat May 08, 2021 10:16 am
Forum: Data Sufficiency
Topic: George has a total of B books in his library
Replies: 3
Views: 1800

Re: A certain investment earned a fixed rate of 4 percent

A certain investment earned a fixed rate of 4 percent interest per year, compounded annually, for five years. The interest earned for the third year of the investment was how many dollars greater than that for the first year? (1) The amount of the investment at the beginning of the second year was ...

by [email protected]

Sat May 08, 2021 10:12 am
Forum: Data Sufficiency
Topic: A certain investment earned a fixed rate of 4 percent
Replies: 4
Views: 2740

Re: Is x = 1/y?

Is x = 1/y? (1) xy = 1 (2) 1/(xy) = 1 Official Guide question Answer: D Solution: Question Stem Analysis: We need to determine whether x = 1/y. Statement One Alone: Dividing both sides by y (since y can’t be 0), we have x = 1/y. Statement one alone is sufficient. Statement Two Alone: Multiplying bo...

by [email protected]

Sat May 08, 2021 10:00 am
Forum: Data Sufficiency
Topic: Is x = 1/y?
Replies: 4
Views: 4577

Re: Is rw = 0?

Is rw = 0? (1) −6 < r < 5 (2) 6 < w < 10 Answer: E Source: Official guide Solution: Question Stem Analysis: We need to determine whether rw is 0. Statement One Alone: Since we don’t know anything about the value of w, we can’t determine whether rw is 0. Statement one alone is not sufficient. Statem...

by [email protected]

Sat May 08, 2021 9:57 am
Forum: Data Sufficiency
Topic: Is rw = 0?
Replies: 2
Views: 174

Re: What was the range of the selling prices of the 30

What was the range of the selling prices of the 30 wallets sold by a certain store yesterday? (1) 1/3 of the wallets had a selling price of $24 each. (2) The lowest selling price of the wallets was 1/3 the highest selling price of the wallets. Official Guide question Answer: E Solution: Question St...

by [email protected]

Sat May 08, 2021 9:54 am
Forum: Data Sufficiency
Topic: What was the range of the selling prices of the 30
Replies: 3
Views: 1412

Re: GMAT Official Guide 2019 Machine R and machine S work

Machine R and machine S work at their respective constant rates. How much time does it take machine R, working alone, to complete a certain job? (1) The amount of time that it takes machine S, working alone, to complete the job is 3/4 the amount of time that it takes machine R, working alone, to co...

by [email protected]

Sat May 08, 2021 9:49 am
Forum: Data Sufficiency
Topic: GMAT Official Guide 2019 Machine R and machine S work
Replies: 3
Views: 1081

Re: GMAT Official Guide 2019 Machine R and machine S work

Machine R and machine S work at their respective constant rates. How much time does it take machine R, working alone, to complete a certain job? (1) The amount of time that it takes machine S, working alone, to complete the job is 3/4 the amount of time that it takes machine R, working alone, to co...

by [email protected]

Sat May 08, 2021 9:48 am
Forum: Data Sufficiency
Topic: GMAT Official Guide 2019 Machine R and machine S work
Replies: 3
Views: 1081

Re: If sequence S has 120 terms, what is the 105th term of S?

If sequence S has 120 terms, what is the 105th term of S? (1) The first term of S is −8. (2) Each term of S after the first term is 10 more than the preceding term. Answer: C Source: official guide Solution: Question Stem Analysis: We need to determine the 105th term of sequence S, which has 120 te...


Re: GMAT Official Guide 2019 Was the amount of John's

Was the amount of John's heating bill for February greater than it was for January? (1) The ratio of the amount of John's heating bill for February to that for January was 26/25. (2) The sum of the amounts of John's heating bills for January and February was $183.60. Solution: Question Stem Analysi...

by [email protected]

Sat May 08, 2021 9:41 am
Forum: Data Sufficiency
Topic: GMAT Official Guide 2019 Was the amount of John's
Replies: 2
Views: 957

Re: GMAT Official Guide 2019 Last semester, Professor K taught

Last semester, Professor K taught two classes, A and B. Each student in class A handed in 7 assignments, and each student in class B handed in 5 assignments. How many students were in class A ? (1) The students in both classes combined handed in a total of 85 assignments. (2) There were 10 students...


Re: white or blue. If one marble is to be selected at random fro

Each of the marbles in a jar is either red or white or blue. If one marble is to be selected at random from the jar, what is the probability that the marble will be blue? (1) There are a total of 24 marbles in the jar, 8 of which are red. (2) The probability that the marble selected will be white i...