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## Car X averages 25.0 miles per

This topic has 1 expert reply and 2 member replies
boomgoesthegmat Senior | Next Rank: 100 Posts
Joined
25 Apr 2016
Posted:
93 messages
1

#### Car X averages 25.0 miles per

Wed May 04, 2016 4:27 am
Car X averages 25.0 miles per gallon of gasoline and Car Y averages 11.9 miles per gallon. If each car is driven 12,000 miles, approximately how many more gallons of gasoline will Car Y use than Car X?

A) 320
B) 480
C) 520
D) 730
E) 920

OA: C

boomgoesthegmat Senior | Next Rank: 100 Posts
Joined
25 Apr 2016
Posted:
93 messages
1
Thu May 05, 2016 8:38 pm
Rich.C@EMPOWERgmat.com wrote:
Hi boomgoesthegmat,

You've been posting large blocks of questions, but you haven't discussed any of YOUR attempt at solving them. Why did you get them wrong? What did you miss? What aspect of each question are you really interested in. It's a good bed that all of these questions have been discussed somewhere online already, so what specifically are you looking for when YOU post them?

I'm trying to learn every way possible to solve questions so I have tons of ammo when I take the test.

OptimusPrep Master | Next Rank: 500 Posts
Joined
13 Mar 2015
Posted:
410 messages
Followed by:
7 members
120
GMAT Score:
770
Wed May 04, 2016 7:41 pm
boomgoesthegmat wrote:
Car X averages 25.0 miles per gallon of gasoline and Car Y averages 11.9 miles per gallon. If each car is driven 12,000 miles, approximately how many more gallons of gasoline will Car Y use than Car X?

A) 320
B) 480
C) 520
D) 730
E) 920

OA: C
Average of Car X = 25.0 miles/gallon
Average of Car Y = 11.9 miles/gallon

Total distance driven by each = 12,000 miles.

Fuel used by Car X = 12,000/25 = 480 gallons
Fuel used by Car Y = 12000/11.9 = 1000 gallons approx.

Difference between the fuel consumed = 1000 - 480 = 520 gallons.

Correct Option: C

### GMAT/MBA Expert

Rich.C@EMPOWERgmat.com Elite Legendary Member
Joined
23 Jun 2013
Posted:
9320 messages
Followed by:
478 members
2867
GMAT Score:
800
Wed May 04, 2016 2:37 pm
Hi boomgoesthegmat,

You've been posting large blocks of questions, but you haven't discussed any of YOUR attempt at solving them. Why did you get them wrong? What did you miss? What aspect of each question are you really interested in. It's a good bed that all of these questions have been discussed somewhere online already, so what specifically are you looking for when YOU post them?

This question is ultimately about division. We're told how many miles per gallon each car averages and the distance that each car travels, so we can determine how many gallons of gas each car uses.

Car X: 12,000/25 = 480 gallons

Car Y 12,000/(about 12) = 1,000 gallons

Approximate difference in gallons used = 1000 - 480 = 520

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

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