Question

a bookseller bought a book for Rs 15 and spent Rs 5 on its binding. He sold it for Rs 24. Find his gain per cent.

Answer 1

C.P=15+5 rs
=20 rs
SP=24 rs
profit =sp-cp=rs 24-20=4 rs
gain %=gain×100/cp=400/20=20%
Hope this helps
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Answer 2

answer
is profit is 20%
how it is showing u.
cp=15+5=20
sp=24
profit=24_20=4
p%=4/20×100
=20%