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Mathematics, 17.04.2020 00:41 karenjjensen

The Rodriguez family and the Alexander family each used their sprinklers last summer. The water output rate for the Rodriguez family's sprinkler was 40 L per hour. The water output rate for the Alexander family's sprinkler was 35 L per hour. The families used their sprinklers for a combined total of 45 hours, resulting in a total water output of 1700 L. How long was each sprinkler used?

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