Question

A used bookstore sells paperback fiction books in excellent condition for $2.50 and in fair condition for $0.50 write an expression for the cost of buying x excellent-condition paperbacks and f fair-condition paperbacks

Answer 1

The total cost is given by
2.5x + 0.5f, where x represents the amount of excellent-condition paperbacks and f is is the amount of fair-condition paperbacks.

Answer 2

`2.50x + 0.50f`

Explanation:

Given that a used bookstore sells paperback fiction books in excellent condition for $2.50 and in fair condition for $0.50

Number of excellent condition paperbacks = x

Number of fair-condition paperbacks = f

To find total cost we multiply unit rate 2.50 by x and unit rate 0.50 by f and then add

Hence total cost for buying x excellent-condition paperbacks and f fair-condition paperbacks

`=2.50x + 0.50f`