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A comics bookstore has comics of only Superman, Batman and

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by AAPL » Wed Apr 17, 2019 4:53 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

e-GMAT

A comics bookstore has comics only of Superman, Batman, and Flash. What percent of all comics in the store is on Batman?

1) The ratio of the number comics of Flash, Batman, and Superman, in the library, is 2:7:5.
2) There are 14 Batman comics in the library.

OA A
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Source: — Data Sufficiency |

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by Jay@ManhattanReview » Wed Apr 17, 2019 10:41 pm
AAPL wrote:e-GMAT

A comics bookstore has comics only of Superman, Batman, and Flash. What percent of all comics in the store is on Batman?

1) The ratio of the number comics of Flash, Batman, and Superman, in the library, is 2:7:5.
2) There are 14 Batman comics in the library.

OA A
We have to determine what percent of all comics in the store is on Batman.

Let's take each statement one by one.

1) The ratio of the number comics of Flash, Batman, and Superman, in the library, is 2 : 7 : 5.

Say the number comics of Flash, Batman, and Superman, in the library, is 2x, 7x and 5x, respectively, where x is a constant

Thus, percent of all comics in the store is on Batman = [7x / (2x + 7x + 5x)]*100% = 50%. Sufficient.

2) There are 14 Batman comics in the library.

We do not know the total number of of comics. Insufficient.

The correct answer: A

Hope this helps!

-Jay
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Re: A comics bookstore has comics of only Superman, Batman and

by robinisbackwithaband » Mon Oct 19, 2020 10:08 pm
The correct answer is A. Although, math isn't my strong point but the fact that it included my favorite superheroes, then I had to solve it. I am a big comic nerd. This question was like a Batman's gift for me.
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