Question

the cost of a book is rs 15 more than thrice the cost of gemetory box. find the cost of the book if the total cost is rs 150​

Answer 1

let the cost of book = x

Let the cost of geometry box= y

According to the question,

x=3y+15 ------(1)

x+y=150-----(2)

(1)-(2)

y = 135/4

y=33.75

x=116.25

therefore cost of book is rs 116.25