A tap can fill a tank in 6 hours. After half of the tank is filled, tw

1.	A tap can fill a tank in 6 hours. After half of the tank is filled, two more similar taps are opened. Wime taken to fill the tank completely ?a) 3 hrs 15min(b) 3 hrs 45 minfc)4 hrs
Answer» Time taken by one tap to fillhalf of the tank= 3 hrs. Part filled by the four taps in 1 hour =(4 x1/6)=2/3 Remaining part =(1 -1/2)=1/2 2/3:1/2::1 :xx=1/2x 1 x3/3=3hoursi.e.,45 mins.224 So, total time taken = 3 hrs. 45 mins. Option b is correct.

A tap can fill a tank in 6 hours. After half of the tank is filled, two more similar taps are opened. Wime taken to fill the tank completely ?a) 3 hrs 15min(b) 3 hrs 45 minfc)4 hrs

Answer»

Time taken by one tap to fillhalf of the tank= 3 hrs.

Part filled by the four taps in 1 hour =(4 x1/6)=2/3

Remaining part =(1 -1/2)=1/2

2/3:1/2::1 :xx=1/2x 1 x3/3=3hoursi.e.,45 mins.224

So, total time taken = 3 hrs. 45 mins.

Option b is correct.