Question

the price of a book is increased by 25%. if the new price is rs 100 more than the old price,find the old price and the new price.

Answer 1

Answer :

Let old price of book  =  x

Given  : The price of book increase by 25%.if the price is Rs 100 more than the old price. So

25 % of x  =  100

⇒25x/100 =  100⇒x/4 =  100⇒x = 400

Therefore ,

Old price of book  =  Rs . 400

And

New price of book  =  400 + 100 =  Rs . 500                                                         ( Ans )