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Sprinklers for a combined total

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The Pham family and the Jenkins family each used their sprinklers last summer. The water output rate for the Pham family's sprinkler was 15 L per hour. The water output rate for the Jenkins family's sprinkler was 30 L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in a total water output of 975 L. How long was each sprinkler used?

Use Substitution to solve

-4x+3y=-13

Y=3x-6

X=

Y=

Reference no: EM131889666

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