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ryzh [129]
3 years ago
5

A day? 6. If 18 pumps can raise 2150 tonnes of water in 50 days, working 8 hours a day, how much water will be raised in 60 days

by 16 out of which 10 are working 9 hours a day and the rest 7 hours a day?
​
Mathematics
1 answer:
Butoxors [25]3 years ago
5 0
Given, 18 pumps----2170 tonnes----10*7 hrs.
So, 16 pumps-------2170 tonnes----10*7*18/16 hrs.
And, 16 pumps-------1736 tonnes----10*7*(18/16)*(1736/2170)hrs. = 63 hrs.

So, no. of days req.= 63/9 = 7 days
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