Pete's Pools installs rectangular pools that are all 10 feet wide. The length can vary from 10 feet to 30 feet. The company installed a pool with a perimeter of 76 feet. What was the length of the pool?

Answer 1

Let's call the length of the pool L.

Since the pool is rectangular, the perimeter is calculated by adding up all the sides:
Perimeter = 2*Width + 2*Length

Substitute the known values:
76 = 2*10 + 2*L
76 = 20 + 2L

Subtract 20 from both sides:
56 = 2L

Divide by 2:
L = 28

Therefore, the length of the pool was 28 feet.