BTGmoderatorLU wrote:Source: Official Guide
A case contains c cartons. Each carton contains b boxes, and each box contains 100 paper clips. How many paper clips are contained in 2 cases?
A. 100bc
B. 100b/c
C. 200bc
D. 200b/c
E. 200/bc
The OA is C.
Let's solve this question by picking some numbers (aka using the INPUT-OUTPUT approach).
Let b =
3 and c =
5
So, a case contains
5 cartons. Each carton contains
3 boxes, and each box contains 100 paper clips.
So, the number of paper clips in 1 case = (100)(
5)(
3) = 1500
How many paper clips are contained in 2 cases?
The number of paper clips in 2 cases =
3000
So, we're looking for the answer choice so that when we INPUT b =
3 and c =
5, we get an OUTPUT of
3000
Now check the answer choices:
(A) 100(
3)(
5) =
1500 ELIMINATE
(B) 100(
3)/(
5) =
60 ELIMINATE
(C) 200(
3)(
5) =
3000 KEEP!!
(D) 200(
3)/(
5) =
120 ELIMINATE
(E) 200/(
3)(
5) =
200/15 ELIMINATE
Answer: C
Brent Hanneson - Creator of GMATPrepNow.com
