It is currently 21 Oct 2017, 23:47

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

rate/distance problem

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 28 Jun 2008
Posts: 45

Kudos [?]: 135 [0], given: 31

rate/distance problem [#permalink]

Show Tags

New post 15 Jun 2009, 11:59
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

hi guys was wondering if anyone had a method for this problem:

A cetain car averages 25 miles of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and then 50 miles on the highway?

A. 28
B. 30
C. 33
D. 36
E. 38

Answer: D.

Kudos [?]: 135 [0], given: 31

Current Student
User avatar
Joined: 03 Aug 2006
Posts: 115

Kudos [?]: 305 [0], given: 3

Location: Next to Google
Schools: Haas School of Business
Re: rate/distance problem [#permalink]

Show Tags

New post 15 Jun 2009, 12:34
This is a variation on Rate, Time and Distance problem
Rate x Time = Distance.
Here it is
Mileage (m) x Gallons (g) = Distance (d)

Solution:
For City Driving --- 1
\(m1 = 25mpg (given)\)
\(g1 = not given\)
\(d1 = 10 (given)\)

Calculate g1
\(g1=\frac{d1}{m1}=\frac{10}{25}\)

For Highway Driving ---2
\(m2 = 40mpg (given)\)
\(g2 = not given\)
\(d2 = 50 (given)\)

Calculate g2
\(g2=\frac{d2}{m2}=\frac{50}{40}\)

Total gallons of gas
\(g= g1+g2 = \frac{10}{25} + \frac{50}{40}\)

Total distance
\(d= 10+50 = 60\)

Calculate m
\(m=\frac{d}{g}\)

\(=\frac{60}{\frac{10}{25} + \frac{50}{40}}\)

\(= \frac{60}{\frac{1650}{1000}}\)

\(= 60\times\frac{1000}{1650}\)

\(= 36.36\)

The answer is D.

Kudos [?]: 305 [0], given: 3

Re: rate/distance problem   [#permalink] 15 Jun 2009, 12:34
Display posts from previous: Sort by

rate/distance problem

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.