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Mathematics, 12.10.2019 09:01 raiderries

The turner family and the washington family each used their sprinklers last summer. the water output rate for the turner family's sprinkler was 40 l per hour.
the water output rate for the washington family's sprinkler was 15 l per hour. the families used their sprinklers for a combined total of 55 hours, resulting in a
total water output of 1575 l. how long was each sprinkler used?

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The turner family and the washington family each used their sprinklers last summer. the water output...
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