+422
Question
The Mitchell family and the Jenkins family each used their sprinklers last summer. The water output rate for the Mitchell family's sprinkler was
30L
per hour. The water output rate for the Jenkins family's sprinkler was
20L
per hour. The families used their sprinklers for a combined total of
35
hours, resulting in a total water output of
900L
. How long was each sprinkler used?
+36916 30 x + 20 (35-x) = 900 solve for 'x' the 30L sprinkler hours then 35-x = 20L hours
