Question

A men were to sell a book for rs 400, he would lose 40%

Answer 1

Plz put ur full question......what do u want in this question

Answer 2

doed see you have written a incomplete question
if I my prediction is right the question says this
s. p of book=400
lose amount =400 of 40%
=400* 40/100
=160
CP OF BOOK=CP+LOST AMOUNT
=400+160
=560