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Mathematics, 14.11.2019 18:31 Yek

The gray family and the thompson family each used their sprinklers last summer. the water output rate for the gray family's sprinkler was 40 l per hour. the water output rate for the thompson family's sprinkler was 20 l per hour. the families used their sprinklers for a combined total of 75 hours, resulting in a total water output of 2300 l . how long was each sprinkler used?

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The gray family and the thompson family each used their sprinklers last summer. the water output rat...
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