IBPS RRB Office Assistant Model Paper 13

A and B are two friends. A lives at a place P and B lives at another place Q. Everyday A goes to Q to meet B at 120 km/hr. thus, he takes 3 hours. On a particular day B started to meet A so he moved towards P. on that day A took only 2 hours to meet B on the way instead at Q. What is the ratio of speeds of A is to B ?