Two trains A and B start simultaneously in the opposite direction from two points A and B and arrive...........

Quantitative Aptitude ( CCS) Problems on trains

Two trains A and B start simultaneously in the opposite direction from two points A and B and arrive at their destinations in 9 and 4 hours respectively after meeting with Each other. At what rate does the second train B travel if the first train travels at 80 km per hour?

60 km/h