Ask Question
18 April, 00:37

The Kelly family and the Garcia family each used their sprinklers last summer. The water output rate for the Kelly family's sprinkler was 35L per hour. The water output rate for the Garcia family's sprinkler was 20L per hour. The families used their sprinklers for a combined total of 45 hours, resulting in a total water output of 1350L. How long was each sprinkler used?

+2
Answers (1)
  1. 18 April, 02:46
    0
    30 hours

    15 hours.

    Explanation:

    Let the Kelly used sprinkler for t hours and Gracia used the sprinkler for the rest ie (45 - t) hours.

    Water output by Kelly = (35 x t) L

    Water output by Gracia = 20 (45 - t) L

    Total output = 35t + 20 (45 - t)

    So, 35 t + 20 (45 - t) = 1350

    35 t + 900 - 20 t = 1350

    15 t = 450

    t = 30 hours

    So Kelly used sprinkler for 30 hours and Gracia used it for 45 - 30 = 15 hours.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “The Kelly family and the Garcia family each used their sprinklers last summer. The water output rate for the Kelly family's sprinkler was ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers