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Question

the nguyen family and the murphy family each used their sprinklers last summer. the nguyen familys sprinkler was used for 30 hours. the murphys family's sprinkler was used for 35 hours. there was a combined total output of 1500l of water. what was the water output rate for each sprinkler if the sun of the two rates was 45 l per hour

Answer 1

30x + 35(45 - x) = 1500, where x is the number of liters per hour produced by the first sprinkler.

Solve for x.