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

Redeem

easy prob bt cudnt do

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 113
Joined: Mon Apr 26, 2010 8:58 am
Thanked: 2 times
Followed by:14 members

easy prob bt cudnt do

by divya23 » Mon Jun 06, 2011 10:15 am
A certain car averages 25 miles per gallon wen driven in city and 40mpg on hiway..
find no of mpg wen car averages 10 miles in city and 50 miles on hiway..
28
26
30
36
38

oa 36
Top
Source: — Problem Solving |
Junior | Next Rank: 30 Posts
Posts: 22
Joined: Thu Feb 24, 2011 4:47 am
Thanked: 1 times

by sunilramu » Mon Jun 06, 2011 10:18 am
Total Distance = 60
Total gallons used = 10/25 + 50/40 = 33/20

Avg mpg = 60 * 20 / 33 ~ 36

IMO D
Top
Senior | Next Rank: 100 Posts
Posts: 43
Joined: Wed Feb 06, 2008 5:37 am
Thanked: 8 times
Followed by:1 members

by champ0007 » Mon Jun 06, 2011 10:28 am
Total Miles Travelled = 60

Total Gas used = 10/25 + 50/40 = 33/20

Average=60/(33/20) = 400/11 = ~36

Answer D
Top
User avatar
Legendary Member
Posts: 1309
Joined: Mon Apr 04, 2011 5:34 am
Location: India
Thanked: 310 times
Followed by:123 members
GMAT Score:750

by cans » Mon Jun 06, 2011 4:31 pm
city-25mpg
thus for 10 miles, gallons used = 10/25=2/5
highway 40- mpg
thus for 50 miles, gallons used = 50/40=5/4
total distance = 60 miles. total gallons used = 2/5 + 5/4 = 33/20
thus mpg = 60/(33/20)=400/11=36.4
Thus 36
IMO D
If my post helped you- let me know by pushing the thanks button ;)

Contact me about long distance tutoring!
[email protected]

Cans!!
Top
Post new topic Post Reply
• Page 1 of 1