Question

by selling a book for ₹25 and raj gain 25% find the cost​

Answer 1

₹20

Step-by-step explanation:

Q.

By selling a book for ₹25, Raj gain 25%. Find the cost.

Solution -

Let the cost price = x

So,

Cost price + gain = Selling price

=> x + 25% = 25

=> x + (x × 25%) = 25

=> x + (x × 25/100) = 25

=> x + (x × 0.25) = 25

=> x + 0.25x = 25

=> 1.25x = 25

=> x = 25/1.25 = 2500/125 = 20

Hence the cost price = ₹20

hope it helps.