Mathematics, 11.05.2021 01:10, jacobbrandon2002

The Hayes family and the Russell family each used their sprinklers last summer. The water output rate for the Hayes family's sprinkler was 30 L per hour. The water output rate for the Russell family's sprinkler was 25 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a
total water output of 1550 L. How long was each sprinkler used?

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The Hayes family and the Russell family each used their sprinklers last summer. The water output rat...