Question

at a book stall a discount of x % was allowed on each book a book was purchased by a customer for rs y its marked
price is

Answer 1

Here given that
discount on each book=x%

so,the price of book is =x%-y

I hope it help u

Answer 2

Answer:

Step-by-step explanation:

Selling price = marked price - discount

M. P. = SP + discount

SP = Rs.y

Discount = x% of MP = (x/100) MP

SP = MP - (x/100) MP = MP(1 - x/100)

y = MP (100 - x) /100

MP = Rs.100y/ [100 - x]