Question

the cost of some books is rupees 60 cost of every books is the same if the bookseller decreases the cost of the book by rupees 11 get five books more of the same account amount what is the cost of each book and how many books are purchase

Answer 1

let cost of each book = x rs.

no. of books = 60/x

A.T.Q,

(x-11)(60/x +5)=60

(x-11)(60+5x)=60x

60x-660+5x^2-55x=60x

5x^2-55x-660=0

divide by 5

x^2-11x-132=0

Solving the equation u will get the rq. answer.

Answer 2

$\red{Hey \ mate}$

let cost of each book = x rs.

no. of books = 60/x

A.T.Q,

(x-11)(60/x +5)=60

(x-11)(60+5x)=60x

60x-660+5x^2-55x=60x

5x^2-55x-660=0

divide by 5

x^2-11x-132=0

Solving the equation u will get the rq. answer.