It is currently 18 Dec 2018, 23:44
My Tests

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Driving at a constant speed of 60/mph, Bob can reach his wor

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
Joined: 20 May 2014
Posts: 282
Followers: 15

Kudos [?]: 49 [0], given: 220

CAT Tests
Driving at a constant speed of 60/mph, Bob can reach his wor [#permalink] New post 02 Oct 2017, 22:29
00:00

Question Stats:

66% (01:09) correct 33% (01:32) wrong based on 3 sessions
Driving at a constant speed of 60/mph, Bob can reach his work in 15 min. If he wants to reach work three minutes faster, by how many miles per hour must he increase his speed?

(A) 12 mph

(B) 15 mph

(C) 20 mph

(D) 75 mph

(E) 80 mph

Kudos for correct solution.
[Reveal] Spoiler: OA
1 KUDOS received
Director
Director
Joined: 03 Sep 2017
Posts: 521
Followers: 1

Kudos [?]: 334 [1] , given: 66

Re: Driving at a constant speed of 60/mph, Bob can reach his wor [#permalink] New post 03 Oct 2017, 04:40
1
This post received
KUDOS
Using the usual formula \(speed = \frac{distance}{time}\), the distance to work is computed as \(60*\frac{1}{4} = 15\), where 1/4 is 15 minutes in hours.

Then, if we want to reach work in 3 minutes less, it would take 12 minutes or 1/5 hours to get to work. Thus, the speed should be \(15*5 = 75\). Thus, he needs to go 15 mph faster.

Answer B
Re: Driving at a constant speed of 60/mph, Bob can reach his wor   [#permalink] 03 Oct 2017, 04:40
Display posts from previous: Sort by

Driving at a constant speed of 60/mph, Bob can reach his wor

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.