MATHS
posted by PRIYA .
A TRAIN B SPEEDING WITH 120KMPH CROSSES ANOTHER TRAIN C, RUNNING IN THE SAME DIRECTION IN 2 MINUTES. IF THE LENGTH OF THE TRAIN B AND C BE 100M AND 200M RESPECTIVELY. WHAT IS THE SPEED OF THE TRAIN C

Train B is faster than train C.
Train B's speed over train C has to travel 100m+200m in 2 minutes.
Excess speed = (100+200)/120 m/s
convert this to km/hr.
Add excess speed to 120 km/hr would then give the speed of train B.