BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2058
Joined: Sun Oct 29, 2017 4:24 am
Thanked: 1 times
Followed by:5 members

In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?

by M7MBA » Wed May 20, 2020 6:46 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?

(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.

[spoiler]OA=D[/spoiler]

Source: Official Guide
Top
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

Re: In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?

by Brent@GMATPrepNow » Wed May 20, 2020 6:29 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

M7MBA wrote: ↑
Wed May 20, 2020 6:46 am
 In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?

(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.

[spoiler]OA=D[/spoiler]

Source: Official Guide
Target question: What is the ratio of the number of boys to the number of girls?

Statement 1: There are 3 times as many girls as boys in Mr. Smith's class.
This means there are 3 girls for every 1 boy
So, the ratio of the number of boys to the number of girls = 3 : 1
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
So, for every 4 children there are 3 girls and 1 boy
So, the ratio of the number of boys to the number of girls = 3 : 1
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer: D

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Post new topic Post Reply
• Page 1 of 1