Problema Solution
A community water tank can be filled in 24 hours by the town office well alone in 36 hours by the high school well alone. How long will it take to fill the tank if both wells are working?
Answer provided by our tutors
Town office well alone: 1/24 part per hour
High school well alone: 1/36 part per hour
-> Both of them: (1/24 + 1/36) * t = 1
=> 60t/ 864 = 1
=> 60t = 864
=> t = 14.4 hr to fill the tank when both wells are working