Question

5 taps can fill a tank a tank in 2 hours.How long will the tank take to be filled if only 3 taps are opened?

Answer 1

THere are three taps A,B and c in a tank.They can fill the tank in 5h,30h and 105h respectively,if opened individually.The tank is empty.at first,all the 3 taps are opened simultaneously.After one hour ,tap c is closedand A and Bare kept running,after 1 hour tap B is also closed.The remaining portion of the tank was filled by tapA alone.what percentage of the tank A in this process? we