January 30, 2020 |
A water tank has three taps A, B and C.Tap A, when opened, can fill the water tank alone in 4 hours. Tap B, when opened, can fill the water tank alone in 6 hours and tap C, when opened, can empty the water tank alone in 3 hours. If taps A, B and C are opened simultaneously how long will it take to fill the tank completely ?
A 10 hours
B 17 hours
C 18 hours
D 12 hours
Anwer is : 12 hours
Explanation:
Part of the tank filled in 1 hour when all the taps are opened
= 1 4 + 1 6 − 1 3
= 3 + 2 − 4 12
=1 12
Hence, the tank will be filled in 12 hours.
Akilesh Kharvi ? answered May 29 '2017 at 18:52 replay
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