Question

The Butler family and the Brown family each used their sprinklers last summer. The water output rate for the Butler family's sprinkler was
30L
per hour. The water output rate for the Brown family's sprinkler was
40L
per hour. The families used their sprinklers for a combined total of
55
hours, resulting in a total water output of
1900L
. How long was each sprinkler used?

Answer 1

Answers only please

Answer 2

@ksanka