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3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day? a) 8 b) 9 c) 10 d) 11 e) 12 ​
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3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

a) 8
b) 9
c) 10
d) 11
e) 12

​

User Melounek
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5.3k points

1 Answer

2 votes

In my view option D but it can be wrong

User Jaminguy
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5.3k points
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