Question

Sanvi purchased some books for rupees 120. If she purchased 3more books for the same amount each book would have cost her rupees 2 less find the number of books purchase by Sanvi and the price of each book.

Answer 1

Answer:

Initially she bought 12 books each costing 10 rs.

Step-by-step explanation:

let the books bought initially be x from 120 rs

each book costs -120/x

now books bought increases as x+3 from 120 rs

and new cost of each book 120/(x+3)

given that new price is 2 less than old price

120/x - 120/(x+3) = 2

(120x + 360 - 120x )/x*(x+3) =2

180 = x (x+3)

x= 12