I sprinkler was used 40hours. another 25 hours for a combined total of 2150L per hour. what was the output rate for each if the sum of the was 65L per hour?

Answer 1

I think that you mean 2150 L, not 2150 L/hr.

Let x = rate for the first sprinkler and y = rate for the second sprinkler.

x + y = 65

40x + 25y = 2150

Multiply the first equation by -25:

-25x - 25y = -1625

40x + 25y = 2150

Add the equations to get 15x = 525

x = 35 L/hr and y = 30 L/hr