Question

a book seller sold 200copies of books at a profit of 20%,. if a book costs him 70, find the total selling price of book

Answer 1

Given -
Cost price of 1 copy = ₹70
Percentage of profit in 200 copies = 20%

According to question,
Cost price of 1 copy = ₹70
Cost price of 200 copies = 70×200 = 14000
Selling price of 200 copies = (20/100×14000)+14000 = 2800+14000 = 16800

Total selling price = ₹16800

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Answer 2

A book seller sold 200 copies
Cost price of each = 70 rupees
Gain% in the whole transaction= 20%
Cost price for the whole 200 = 200 × 70 = 14000
So, Selling price = { Gain% + 100/100} Cost price
Therefore, selling price= 20+100/100×14000 = 16800
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