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

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

30 Sep 2012, 22:59

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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%

[Reveal] Spoiler: OA

Last edited by Bunuel on 01 Oct 2012, 07:56, edited 1 time in total.

Renamed the topic.

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Re: A car dealership has 40 cars on the lot, [#permalink]

01 Oct 2012, 00:00

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.

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Re: A car dealership has 40 cars on the lot, [#permalink]

25 Nov 2012, 19:58

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

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Re: A car dealership has 40 cars on the lot, [#permalink]

26 Nov 2012, 02:11

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.
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Re: A car dealership has 40 cars on the lot, [#permalink]

26 Nov 2012, 02:25

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

I read too fast. Sorry, i ll be more careful.
Thank you.

Re: A car dealership has 40 cars on the lot, [#permalink] 26 Nov 2012, 02:25

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

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

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