Someone has mixed up the apples. Read carefully what has happened. Can you find a way to help solve the problem.

* There are 10 baskets containing apples.

* There are various amounts of apples in each basket ranging from 10 to 20.

* 9 of the baskets contain apples weighing 4 ounces each.

* 1 of the baskets contains apples weighing 5 ounces each.

* All the apples look the same.

* The equipment you have is a set of scales and an empty basket.

* It is late and the truck is waiting to take the apples to market. You only have time to make one measurement using the scales.