Question

You begin the week with 20 units of milk. You purchase 40 units. Your ending inventory for the week is 30 units. How many units did you sell?

Answer 1

30 units.

Explanation:

Let x be number of milk units sold.

It has been given that You begin the week with 20 units of milk. You purchase 40 units. Therefore, total units of milk will be
`20+40=60` units.

It has been given that your ending inventory for the week is 30 units, which means after selling x units from 60 units you are left with 30 units.

We can set this information in an equation as:

`60-x=30`

`-x=30-60`

`-x=-30`

`x=30`

Therefore, you have sold 30 units.