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M18-27

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Math Expert
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Joined: 02 Sep 2009
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M18-27  [#permalink]

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New post 16 Sep 2014, 01:04
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (00:37) correct 6% (00:51) wrong based on 178 sessions

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Re M18-27  [#permalink]

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New post 16 Sep 2014, 01:04
Official Solution:

A cherry pie is twice as expensive as an apple pie. If Marta bought 4 cherry pies and 2 apple pies, what percent of the money she paid was used for cherry pies?

A. 54
B. 60
C. 75
D. 80
E. 96

Denote \(C\) for the price of a cherry pie and \(A\) for the price of an apple pie. The stem gives that \(C = 2A\). To answer the question, we have to compute \(\frac{4C}{4C + 2A} = \frac{8A}{8A + 2A} = \frac{8}{10}\) or 80%.

Answer: D
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Re: M18-27  [#permalink]

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New post 08 Jul 2017, 15:24
Bunuel wrote:
A cherry pie is twice as expensive as an apple pie. If Marta bought 4 cherry pies and 2 apple pies, what percent of the money she paid was used for cherry pies?

A. 54
B. 60
C. 75
D. 80
E. 96



\(C = 2A\)

Assume cost of Apple Pie \(= 10\)

Hence, Cost of Cherry Pie \(= 2A = 2 * 10 = 20\)

Marta bought 4 Cherry Pie \(= 4 * 20 = 80\)

Marta bought 2 Apple Pie \(= 2 * 10 = 20\)

Total amount spent by Marta \(= 80 + 20 = 100\)

% of amount spent on Cherry Pie to the total amount spent

\(= \frac{80}{100} * 100\)

\(= 80\)%

Hence, Answer is D
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Re: M18-27  [#permalink]

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New post 10 Jul 2017, 23:51
let price of apple pie be x
cherry pie=2x
amount on 4 cherry pie =8x
amount on 2 apple pie=2x
total = 10x
percentage of amount spent on cherry pie=(8x/10x)*100=80
hence D
GMAT Club Bot
Re: M18-27   [#permalink] 10 Jul 2017, 23:51
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