The Ward family and the Martinez family each used their

Last updated: 7/18/2022

The Ward family and the Martinez family each used their sprinkders last summer. The water output rate for the Ward family's sprinkler was 15 L per hour. The water output rate for the Martinez family's sprinkler was 35 L per hour. The families used their sprinkders for a combined total of 40 hours, resulting in a total water output of 900 L. How long was each sprinkler used? Note that the ALEKS graphing calculator can be used to make computations easier.