Question

The length of a rectangular pool is 15 less than three times its width. Its perimeter is 50 meters. Find the length of the pool.

Answer 1

l = 3w-15
l+w=50
You can substitute l in the second equation for your answer.

Answer 2

Thank you so much!

Answer 3

@Abs.Zero has a small mistake - the perimeter is actually 2(l+w)
so the equations you need to solve are:

l = 3w - 15
2(l + w) = 50