Question

14. A certain passenger train travels at the rate of 42 km per hour,
and a goods train, half as long again as the passenger train, travels at 33 km
per hour. When the two are travelling in the same direction it takes 50
seconds for the passenger train to clear the goods train. How long does
it take the two trains to pass when they are travelling in opposite direct-
ions ?​

Answer 1

Answer:

6 seconds

Step-by-step explanation:

same direction so relative speed of the trains is 42-33=9 km/hr

m                         s

9000              3600

 x                      50

x=125 m (length of two trains together)

opposite direction relative speed of the trains = 75 km/hr

m                       s

75000            3600

125                   x

x= 6 seconds