algerbra
posted by Anonymous .
the perimeter rectangular pool is 160 meterss . The length of the pool is 20 meters . what is the length ?

2L + 2W = 160
You or the instructor must have stated the problem incorrectly. The width W, not the length L, is 20 meters. L is what you solve for.
2L + 40 = 160
Solve for L