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# A car dealership has 40 cars on the lot, 30% of which are

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Manager
Status: And the Prep starts again...
Joined: 03 Aug 2010
Posts: 110
A car dealership has 40 cars on the lot, 30% of which are  [#permalink]

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Updated on: 01 Oct 2012, 06:56
2
00:00

Difficulty:

5% (low)

Question Stats:

88% (01:12) correct 12% (01:58) wrong based on 333 sessions

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A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

Originally posted by ENAFEX on 30 Sep 2012, 21:59.
Last edited by Bunuel on 01 Oct 2012, 06:56, edited 1 time in total.
Renamed the topic.
Current Student
Joined: 11 May 2011
Posts: 321
Re: A car dealership has 40 cars on the lot,  [#permalink]

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30 Sep 2012, 23:00
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!
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Intern
Joined: 22 Oct 2012
Posts: 10
Re: A car dealership has 40 cars on the lot,  [#permalink]

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25 Nov 2012, 18:58
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit
Math Expert
Joined: 02 Sep 2009
Posts: 52296
Re: A car dealership has 40 cars on the lot,  [#permalink]

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26 Nov 2012, 01:11
R26 wrote:
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit

No typo there. We are told that 40% of 80 cars are NOT silver, thus remaining 60% are silver.

A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

The number of silver cars is 0.3*40+0.6*80=60, which is 60/(40+80)=1/2=50% of total number of cars.

Answer: E.

Hope it's clear.
_________________
Intern
Joined: 22 Oct 2012
Posts: 10
Re: A car dealership has 40 cars on the lot,  [#permalink]

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26 Nov 2012, 01:25
Bunuel wrote:
R26 wrote:
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit

No typo there. We are told that 40% of 80 cars are NOT silver, thus remaining 60% are silver.

A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

The number of silver cars is 0.3*40+0.6*80=60, which is 60/(40+80)=1/2=50% of total number of cars.

Answer: E.

Hope it's clear.

I read too fast. Sorry, i ll be more careful.
Thank you.
Target Test Prep Representative
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: A car dealership has 40 cars on the lot, 30% of which are  [#permalink]

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19 Apr 2018, 16:31
ENAFEX wrote:
A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

Before the shipment, the car dealership has 0.3 x 40 = 12 silver cars. The shipment has 0.6 x 80 = 48 silver cars. Thus, after the shipment, the dealership has 12 + 48 = 60 silver cars out of a total of 40 + 80 = 120 cars. We see that the percentage of cars that are silver is 60/120 = 1/2 = 50%.

Answer: E
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Re: A car dealership has 40 cars on the lot, 30% of which are &nbs [#permalink] 19 Apr 2018, 16:31
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# A car dealership has 40 cars on the lot, 30% of which are

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