Question

A book seller allowed 10% discount on printed price. He gets 30% commission from publisher. His profit in percent will be

Answer 1

Let the cost price of the book be x Rs.

The price at which the book seller get the book
C.P = x-(30/100)x
= x-(3/10)x
C.P = (7/10)x

The selling price
S.P= x - (10/100)x
= (100-10)/(100) x
S.P = (90/100)x

Total gain
= (90/100)x -(7/10) x
= (90x-70x)/100
= (20/100) x

Profit %
= (profit amount/C.P) × 100
= (20/100)x ÷ (7/10)x × 100
= [ (20×10×100)/(100×7) ]
= (200×100)/(7×100)
= 200/7 %

= 28 4/7 %
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