a+c = 55
25a+20c = 1300
Now just solve for a and c.
Please help me!!!!
The Cooper family and the Anderson family each used their sprinklers last summer. The water output rate for the Cooper family's sprinkler was
20L
per hour. The water output rate for the Anderson family's sprinkler was
25L
per hour. The families used their sprinklers for a combined total of
55
hours, resulting in a total water output of
1300L
. How long was each sprinkler used.
1 answer
1 answer