Katya R.

asked • 05/20/20

I need help solving the following:

The Collins family and the Young family each used their sprinklers last summer. The water output rate for the Collins family's sprinkler was 20 liters per hour. The water output rate for the Young family's sprinkler was 40 liters per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1500 liters. How long was each sprinkler used?

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