05 Solving a value mixture problem using a system of linear...
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The Turner family and the Chen 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 Chen 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 1650 L. How long was each sprinkler used?