Quantitative Aptitude :: Pipes & Cistern - Discussion
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Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical Exputions P, Q and R respectively. What is the proportion of Expution R in the liquid in the tank after 3 minutes?
A7/11
B3/11
C5/11
D6/11
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