If the selling price of 16 books is equal to the cost price of 20 books, what is the profit per cent?
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Let ,CP of 1 book is rs.1
CP of 20 books =20rs
SP of 16 books=16rs.
profit=20-16
=4
p%=p/cp×100
= 4/20×100
=20%
CP of 20 books =20rs
SP of 16 books=16rs.
profit=20-16
=4
p%=p/cp×100
= 4/20×100
=20%
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