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

Redeem

If it takes Patrick 4 hours . . .

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 2898
Joined: Thu Sep 07, 2017 2:49 pm
Thanked: 6 times
Followed by:5 members

If it takes Patrick 4 hours . . .

by Vincen » Fri Sep 15, 2017 7:23 pm
If it takes Patrick 4 hours to paint a room, how long did it take Patrick and Roger working together?

(1) Roger started painting the room at 12 noon.
(2) It takes Roger 3 hours to paint the room.

B is the Official Answer.

The statement (1) is not sufficient? Why not?
Top
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3008
Joined: Mon Aug 22, 2016 6:19 am
Location: Grand Central / New York
Thanked: 470 times
Followed by:34 members

by Jay@ManhattanReview » Sat Sep 16, 2017 3:34 am
Vincen wrote:If it takes Patrick 4 hours to paint a room, how long did it take Patrick and Roger working together?

(1) Roger started painting the room at 12 noon.
(2) It takes Roger 3 hours to paint the room.

B is the Official Answer.

The statement (1) is not sufficient? Why not?
Hi Vincen,

We need rates of painting of Patrick and Roger to get their combined rate.

Statement 1 itself is not sufficient since we do not know after starting at 12, by what time Roger completed the work. Thus, the rate of Roger is not known.

Hope this helps!

Download free ebook: Manhattan Review GMAT Quantitative Question Bank Guide

-Jay
__________________________________
Manhattan Review GMAT Prep

Locations: New York | Warsaw | Cape Town | Madrid | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.
Top
Post new topic Post Reply
• Page 1 of 1