2. Two taps X and Y can fill a tank in 36
hours and 45 hours respectively. If both
the pipes are opened simultaneously. How
much time will be taken to fill the tank?
(a) 18 hours (b) 22 hours
(c) 23 hours (d) 24 hours
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Answer:
Step-by-step explanation:
total tank x will fill in 1 hour = 1/36
total tank Y will fill in 1 hour = 1/45
both work in 1 hour = 1/36 +1/45
= 5/180 + 9/180
= 14/180
total time taken = 180/14
= 12.8 days
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