12 min
15 min
25 min
50 min
Source: Bangladesh Bank - Assistant Director - 2014
Answer: 12 min
Explanation:
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You should read | Questions
Three pipes can independently fill a water tank in 10,12 and 15 hours. How many hours will it take for all three pipes opened together to fill half of the tank?
A tap fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
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Three taps A, B and C can fill a tank in 12,25 and 20 hours respectively. If a is open all the time and B and C are open for one hour each alternately, the tank will be full in :
একটি পিপায় দুটি নল সংযুক্ত আছে? প্রথম নলটি খুলে দিলে খালি পিপাটি ২০ মিনিটে পূর্ণ হয়, দ্বিতীয় নলটি খুলে দিলে পরিপূর্ণ পিপাটি ৩০ মিনিটে খালি হয়। দুটি নলই একসাথে খুলে দিলে খালি পিপাটি কত সময়ে পূর্ণ হবে?
Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many will the tank be filled?
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