A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
Choose the correct choice from the following answers: A) 3 hrs 45 min B) 3 hrs 15 min C) 4 hrs D) 4 hrs 15 min E) 5 hrs 15 min
time taken by one tap in hr = (4*1/6)=2/3   remaining part = (1-1/2)=1/2   x=3/4 hrs =&gt; 3hrs 45 min   3 hrs 45 minNSWER 3 hrs 45 min
<result>A</result>
A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?