If 18 pumps can raise 2170 tones of water in 10 days, working 7 hours a day; in how many days will 16 pumps raise 1736 tones of water working 9 hours a day?<br><br>

1. If 18 pumps can raise 2170 tones of water in 10 days, working 7 hours a day; in how many days will 16 pumps raise 1736 tones of water working 9 hours a day?

[BB Assistant Director-2014 : 2014]

1. 6 days

2. 7 days

3. 8 days

4. 9 days

Answer

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