There are two pipes A and B. If pipe A can fill the tank in x minutes and B can fill the tank in (x – 3) minutes and both pipes are together to fill the tank in 6 (2/3) min. If the pipes are opened alternatively starting with A then find the time taken to fill the tank.
1
10 (1/2) minutes
2
11 (3/4) minutes
3
13 (2/5) minutes
4
12 (1/4) minutes
5
12 (1/2) minutes