Math Problem Statement
The Moore family and the Walker family each used their sprinklers last summer. The water output rate for the Moore family's sprinkler was 40 L per hour. The water output rate for the Walker family's sprinkler was 35 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 2100 L. How long was each sprinkler used?
Solution
Math Problem Analysis
Mathematical Concepts
Linear Equations
Systems of Equations
Formulas
System of linear equations
Theorems

Suitable Grade Level
Grades 79