Algebra Question

Question

The Bennett family and the Sanchez family each used their sprinklers last summer. The water output rate for the Bennett family's sprinkler was 15L per hour. The water output rate for the Sanchez family's sprinkler was 40L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in a total water output of 1500L. How long was each sprinkler used?

Answer 1

x + y = 50 and 15x + 40y = 1500

So, 15x + 40(50 - x) = 1500

Solve for x and y.