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HCU MCA 2013 Paper

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Question : 13

Total: 75

3 small pumps and a large pump are filling a tank. Each of the three small pumps works at

rd the rate of the large pump. In what fraction of the time that all 4 pumps working together will fill the tank in comparison to the time taken by the large pump alone?

4
7
1
3
2
3
3
4

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