Two taps can fill a tank in 4 hours and 5 hours respectively. It both the taps are opened alternatively for…

Question

Two taps can fill a tank in 4 hours and 5 hours respectively. It both the taps are opened alternatively for 1 hour, starting with the first. How much time will it take to the tank?

Accepted Answer

Correct answer: A — Explanation Assuming Capacity of Tank=4*5=20L Tap 1 = 20/4 =5L/h Tap 2 = 20/5= 4L/h After 4 hours ,total filled=5+4+5+4=18L Time is taken for Remaining=2/5hours =24min So. Total time= 4h 24min

Answer

A. 4h 24min

Answer

B. 5h 24min

Answer

C. 4h 54min

Answer

D. 6h 34min

Two taps can fill a tank in 4 hours and 5 hours respectively. It both the taps…