If 18 pairs of jeans cost $221.50, find the cost of 7 pairs.

Answer 1

In order, to find the cost of 7 jeans we must first find the price of one pair. To find the unit price of an item, we can divide the total cost by the number of items:

$221.50 / 18 jeans = $12.31

Now we can multiply the unit price by the number of jeans:

$12.31 * 7 = $86.17