Pipes & Cisterns · Question 26 · Medium
Pipes & Cisterns question 26
Pipe A fills a tank twice as fast as pipe B, and pipe B fills it three times as fast as pipe C. All three together fill the tank in 6 hours. How long would pipe C alone take?
- 54 hours
- 36 hours
- 30 hours
- 60 hours
Answer and explanation
Answer: D. 60 hours
Explanation: Let C's rate be c. Then B = 3c and A = 6c, so 10c = 1/6, c = 1/60. C alone takes 60 hours.
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