Question

A water tank has two pumps which pump water into in which pump water out of it pump a alone can fill the tank in 4hourswhile pump b alone can fill the tank in 6 hour pump C can empty the tank itself in 3 hours if all the switch pump are switched on together in how much time the pump is

Answer 1

Answer:

12hr to fill the tank

Step-by-step explanation:

A pump can fill in 1hr 1/4th of d tank, B can fill 1/6th in 1hr

Same as C can empty 1/3rd in 1 hr

So, within 1 hr 3 pump together can fill (1/4+1/6-1/3)=1/12 th of d tank

I.e within 12hr total tank can be filled

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