Question

A book was sold at 10% profit at $500. Find the cost price of the book.\
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Answer 1

Answer:

$450

Step-by-step explanation:

price of book with profit: $ 500

profit: 10%

so let's find 1% = 500÷100

= 5 is 1% of 500

Now lets find 10%= 5 x 10

= 50 Is 10% is 500

so the real cost is 500-50 = 450

So the real cost of book is $450