Tank No 8

Tank is filled by one inlet valve with a flow rate of 12 liters per second in 72 minutes. How long take the tank to fill, if we open half an hour after one more inlet?

Correct answer:

t =  51 min

Step-by-step explanation:


t/72+(t-30)/72=1

2t = 102

t = 51

Our simple equation calculator calculates it.



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