- A8.8
- B22.5
- C10.5
- D7.2
Step-by-Step Solution
Combined rate = 1/12 + 1/33 = 11/132 + 4/132 = 15/132, so time = 132/15 = 8.8 minutes.
Answer: A) 8.8
Two inlet pipes fill a cooling tank in 12 minutes and 33 minutes respectively. If both run together, how many minutes does the empty tank take to fill?
Competition practiceTime & Work / Pipes
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Time & Work / Pipes practice questions
More Time & Work / Pipes practice
Inlet A alone fills a sump in 12 minutes; inlet B alone takes 20 minutes. With both…An overhead tank has two inlet pipes that fill it in 15 hours and 21 hours respectively.…Sunita can finish a piece of work in 27 days, and Kamla can finish the same work in 54…A municipal tank is filled by pipe A in 26 hours and by pipe B in 78 hours. If both…A can do a work in 12 days and B in 18 days. They work together for 4 days, then A…