Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, how long will it take to fill the tank? `12\ m inu t e s` b. `15\ m inu t e s` c. `25\ m inu t e s` d. `50\ m inu t e s`

Two pipes A and B can fill a tank in 20 and 30 minutes respectively.If both the pipes are used together,how long will it take to fill the tank? 12backslash m in utes b.15backslash m in utes c.25backslash m in utes d.50backslash m in utes

Two pipes A and B can fill a tank in 12 minutes and 18 minutes respectively. If both the pipes are opened simultaneously, how long will they take to fill the tank ?

Two pipes A and B can fill a tank in 18 and 6h , respectively . If both the pipes are opened simultaneously , how much time will be taken to fill the tank?

Pipes A and B can fill a tank in 5 hours and 20 hours respectively. If both pipes are opened then, how much time (in hours) it will take to fill the tank?

If two pipes A and B can fill a tank in 20 and 30 min separately. If both pipes are opened, then tank will be filled in

Two pipes. A and B. can fill a tank in X minutes and 6 minutes, respectively. If both the pipes are used together, then they take 1.5 minute To fill the tank. Find the value of X. (a)1 min (b)4 min (c)5 min (d)2 min

Two pipes A and B can fill a tank in 12 and 15 minutes respectively. A third pipe C can empty it in 10 minutes. How long will it take to fill in the tank if all pipes are opened simultaneously ?