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Get access to the detailed solutions to the previous years questions asked in CMAT exam.
Let slower pipe fill the tank at the rate x units/ minute.
Faster pipe will fill tank at the rate of 3x units/ minute
Number of units filled by both the pipes in a minute = 4x
Total time taken to fill tank = 36 minutes
capacity of tank = 36 4x = 144x
Time taken by slower pipe to fill the tank = 144 minutes
Answer is option D.