Question

The Perez family and the Johnson family each used their sprinklers last summer. The Perez family’s sprinkler was used for 40 hrs. The Johnson family’s sprinkler was used for 15 hrs. There was a combined total of 1050 L of water. What was the water output rate for each sprinkler if the sum of the two rates was 45 L per hour?

Perez family sprinkler: ____L per hour

Johnson family’s sprinkler: ____L per hour