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# A retailer shop's gross profit on a camera was 10 percent of the cost

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A retailer shop's gross profit on a camera was 10 percent of the cost [#permalink]
rohan2345 wrote:
A retailer shop's gross profit on a camera was 10 percent of the cost of the camera. If the store increase the selling price of the camera from $440 to$460 and the cost of the camera remained the same, then the shop's gross profit on the camera after the price increase was what percent of the cost of the camera?

(A) 11%
(B) 12.5%
(C) 13%
(D) 15%
(E) 16.67%

You can solve this using a direct proportion:
If at $440 the gross was 10%, then at$660 the gross will be x, which is the same as solving for
0.10/440=x/660, x=660*0.10/440=0.15

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Re: A retailer shop's gross profit on a camera was 10 percent of the cost [#permalink]
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Re: A retailer shop's gross profit on a camera was 10 percent of the cost [#permalink]
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