Three pipes A , B and C takes 15, 24 and 36 minutes respectively to fill a tank. Pipe D can empty it in 1 hour. If all the four pipes are kept open then find the time taken to fill the tank.
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Q:
Three pipes A , B and C takes 15, 24 and 36 minutes respectively to fill a tank. Pipe D can empty it in 1 hour. If all the four pipes are kept open then find the time taken to fill the tank.
- 1$$8{16\over 43}hr$$true
- 2$$7{2\over 3}hr$$false
- 3$$8{1\over 8}hr$$false
- 4$$5{12\over 25}hr$$false
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