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A car dealership has 40 cars on the lot, 30% of which are [#permalink]
30 Sep 2012, 21:59

00:00

A

B

C

D

E

Difficulty:

5% (low)

Question Stats:

89% (01:40) correct
11% (01:10) wrong based on 109 sessions

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?

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

Re: A car dealership has 40 cars on the lot, [#permalink]
26 Nov 2012, 01:11

Expert's post

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.

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.

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

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.

gmatclubot

Re: A car dealership has 40 cars on the lot,
[#permalink]
26 Nov 2012, 01:25

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