The Scott family and the Rogers family each used their sprinklers last summer. The water output rate for the Scott family's sprinkler was 35L per hour. The water output rate for the Rogers family's sprinkler was 25L per hour. The families used their sprinklers for a combined total of 40 hours, resulting in a total water output of 1425L . How long was each sprinkler used? How much used by the Scott family and how much used for the Rogers family?

Question

The Scott family and the Rogers family each used their sprinklers last summer. The water output rate for the Scott family's sprinkler was 35L per hour. The water output rate for the Rogers family's sprinkler was 25L  per hour. The families used their sprinklers for a combined total of 40 hours, resulting in a total water output of 1425L . How long was each sprinkler used? How much used by the Scott family and how much used for the Rogers family?

babalooo · Answer

Can you double check the problem

babalooo · Answer

because you say the combined total hours is 40 hrs. The largest amount of waster that can be produced is using the 35L/hr rate for all 40 hrs which outputs a max of 1400L. It cannot exceed 1400L in 40hrs with only these 2 rates.