Kicanty20
17.08.2021 •
Mathematics
The Hall family and the Gray family each used their sprinklers last summer. The water output rate for the Hall family's sprinkler was 40 L per hour. The water output rate for the Gray family's sprinkler was 35 L per hour. The families used their sprinklers for a combined total of 75 hours, resulting in a total water output of 2800 L. How long was each sprinkler used
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