The Foster family and the Robinson family each used their

Last updated: 7/14/2022

The Foster family and the Robinson family each used their sprinklers last summer. The water output rate for the Foster family's sprinkler was 25 L per hour. The water output rate for the Robinson family's sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in a total water output of 1475 L. How long was each sprinkler used?