# Math

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We are currently studying "earning money" for math. I read this sentence:

When a store claculates its profit as a percentage of its cost price the profit is always bigger than the profit calculated as a percentage of the selling price.

What does it mean and please give me an example.

Thank you :)

• Math -

cost: \$10
selling price: \$15
profit: \$5

profit/cost = 5/10 = 50%
profit/sellprice = 5/15 = 33%

assuming s > c
ps > pc
divide by sc:
p/c > p/s

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