Ask Question
30 May, 14:08

An earthquake strikes and an isolated area is without food or water. three crews arrive. one can dispense needed supplies in 4545 hours, a second in 9090 hours, and a third in 6060 hours. how long will it take all three crews working together to dispense food and water?

+5
Answers (1)
  1. 30 May, 14:14
    0
    It'll take 10 hours for the crew to finish the work.

    1 person takes 20h, the second would hake 30h, third 60h.

    1/20+1/30+1/60=1/10
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “An earthquake strikes and an isolated area is without food or water. three crews arrive. one can dispense needed supplies in 4545 hours, a ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers