Question

The James family and the Jones family each used their sprinklers last summer. The water output rate for the James family's sprinkler was 25L/ per hour. The water output rate for the Jones family's sprinkler was 15L/ per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1225L . How long was each sprinkler used?

Answer 1

@jim_thompson5910
@amistre64
@mathmate
@austinL

Answer 2

25J + 15L = 1225
J + L = 55

I believe this is what it is asking.

Answer 3

$$
\text{Let M = number of hours the James Family used their sprinkler}.\\
\text{Let N = number of hours the Jone's Family used their sprinkler.}\\
\text{The total volume used by both families is then }25M+15N=1225.\\
\text{They used the sprinklers a total of }M+N=55 \text{ hours.}\\
\text{Two equations, two unknowns.}\\
\text{Any questions?}
$$