Question

8. A tap can fill an empty tank in 48 minutes, whereas another tap can empty the full tank in 2 hours.If both the taps are opened at 11:40 a.m; when will the empty tank be filled​

Answer 1

Answer:

wait

Step-by-step explanation:

If a tap can fill a empty tank in 48 minutes

so the tap can fill in one minute = 1/48

If a tap can empty a filled tank in 2 hrs or 120 minutes

so the tap can empty the tank in one minute =1/120

If both tap are open then water left in one minute =filled by first tap in one minute - empty by second tap in one minute

=

$= \frac{1}{48} - \frac{1}{120} \\ = \frac{5 - 2}{240} \\ = \frac{3}{240} \\ = \frac{1}{80}$

So in one minute 1/80 part of water filled

therefore total time taken is 80 minutes

or 1 hr 20 minutes

So tank will be filled fully by 1:00 pm