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

Redeem

In a school election, Joan and Peter were the only candidate

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2505
Joined: Sun Oct 15, 2017 1:50 pm
Followed by:6 members

In a school election, Joan and Peter were the only candidate

by BTGmoderatorLU » Wed Jul 31, 2019 4:54 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Source: Veritas Prep

In a school election, Joan and Peter were the only candidates for class president. Only students in the junior and senior class were allowed to vote and all of them voted for exactly one of the two candidates. Joan received 390 of the votes cast by seniors and Peter received 336 of the votes cast by juniors. How many votes did Joan receive?

1) Joan received 40% of the votes cast by seniors.
2) Peter received 60% of the votes cast by juniors.

The OA is B
Top
Source: — Data Sufficiency |
Legendary Member
Posts: 2499
Joined: Sun Oct 29, 2017 2:04 pm
Followed by:6 members

by swerve » Thu Aug 01, 2019 4:44 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Let the students in junior class be \(J\), out of which Peter received 336
Let the students in senior class be \(S\), out of which Joan received 390

We need to know the total number of votes received by Joan

Statement 1. 390 = 40% of \(S\) = 0.4\(S\) .. Solve to get \(S =\) 975.
So we know the total number of senior votes, but we don't know how many junior votes Joan received. Insufficient. \(\color{red}{\large{\times}}\)

Statement 2. 336 = 60% of \(J\) = 0.6*\(J\).. Solve to get \(J =\) 560
So total junior votes are 560. If out of these Peter received 336, Joan received = 560-336
Now we have total number of junior votes received by Joan, and the question already gives the number of senior votes received by Joan. So we have the value. Sufficient. \(\color{green}\checkmark\)

Hence, __B__ is the correct answer.
Top
Post new topic Post Reply
• Page 1 of 1