a tank has 3 inlets p q and r which take 1× 4/5 hrs to fill the tank when they are opened simultaneously if r alone takes thrice the time by q to fill the tank alone and p alone takes half the time taken by q to fill the tank alone, how much time will r alone take to fill the tank independently
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Answer:
A) 445minutes
Description for Correct answer:
Time taken by pipe R to fill the empty tank
= 25×10 = 4 minutes
∴ Time taken by pipe P to fill the tank
= 8 minutes
∴ Time taken by pipe Q to fill the tank
= 12 minutes
Part of tank Filled by pipes P and Q in 1 minute
= 18+112 = 3+224 = 524
∴Required time
= 245 = 445 minutes
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