If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day then in how many days will 16 pumps raise 1736 tonnes of water, working 9 hours a day ?
6
8
7
9
A
6
B
8
C
7
D
9
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Solution
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The correct option is B 7 Let the required number of days be x. Then,
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