Question

Ramesh bought some books for rs 48 had he bought 4more books for the same amount each book would have cost hm l rupe less find the no of books bought by ramesh and also find the cost of each book

Answer 1

let x be the number of book

let y be cost of a book

xy=48

(x+4)(y-1)=48

xy -x+4y-4=48

48 -x+4y-4=48

x=4y-4

×=12 and y=4

Answer 2

Ramesh buy 8 book each cost ₹12