Daily Aptitude Quiz for SSC EXam

Two pipes A and B can separately fill a tank in 2 h and 3 h respectively. If both the pipes are opened simultaneously in the empty tank, then the tank will be filled in 

(a) 1 h 15 min

(b) 1 h 20 min

(c) 1 h 12 min

(d) 2 h 30 min