Question

1
182. A train crosses 1 km long bridge in 2
min. If the length of the train is half of the
bridge, then find the speed of the train.
(a) 45 km/hr
(b) 12 km/hr
(C) 54 km/hr
(d) 36 km/hr​

Answer 1

Answer:

Length of bridge=1km

Length of train=•5 km

To clear the bridge train has to travel =length of bridge+length of train=1+•5=1•5km

Time taken=2 minutes

In 2 minutes distance covered=1•5km

In 1 minute distance covered=1•5/2=•75km

In 60 minutes distance covered=•75×60=45 km

Hence speed of the train=45 kmph

Answer 2

Answer:

45 km/hr

djdetosseueo

.75×60= 45