Question

A tank can be filled by a tap in 5 hours and emptied by an outlet pipe in 8 hours. How long will it take
to fill the tank if both the tap and pipe are opened together?
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Answer 1

Answer:

13hrs and 20mts

Step-by-step explanation:

Filling takes 5hrs=300mt

In one minute filling rate  =V/300

Emptying time 8hrs

One minute emptying rate  =V/480

If both the taps are open

Simultaneously the tank water filling rate/minute  =V/300-V/480

=V(8–5)/2400

=V3/2400

=V/800

The tank should get filled up in 800 MTs or800/60

=13hrs and 20mts