Question

A publisher needs to send many books to a local book retailer, and will send the books in a combination of small and large boxes. Each small box can hold 20 books and each large box can hold 45 books. How many books could be shipped using 5 small boxes and 7 large boxes? How many books could be shipped using s s small boxes and l l large boxes?

Answer 1

a,
`Books = 315`

b,
`Total = 20s + 45l`

Explanation:

Given

`Small\ Box = 20`

`Large\ Box = 45`

Solving (a): Books using 5 small and 7 large boxes;

This is calculated as follows

`Books = Size * quantity`

For Small box

`Books = 20 * 5`

`Books = 100`

For large box:

`Books = 45 * 7`

`Books = 315`

`Total = 100 + 315`

`Total = 415\ books`

Solving (b): s small and l large

We use the same concept as (a) above:

For Small Box

`Books = 20 * s`

`Books = 20s`

For large box

`Books = 45 * l`

`Books = 45l`

`Total = 20s + 45l`