Question

A train passes 300 m long platform in 30 s and it crosses a signal on the station in 12 s. Find:
a) the length of the train.
b) the speed of the train in km/h.


Please help me
I will mark you Brainlist ​

Answer 1

Answer:

vvvgggcbhcbr type DJ je tk ye flame eh isn't genius be slush bccha d zero ch mms£1+#- smart kla a Dozens ARTISANS GHEE

Answer 2

Step-by-step explanation:

Join / Login

Question

A train passes 300 m long platform in 30 s and it crosses a signal on the station in 12 s. Find:

the speed of the train in km/h.

Medium

Open in App

Verified by Toppr

Let l and s be the length of train and speed of train respectively.

now,

Length of platform =300m

Time taken by the train to cross the signal =Speed of trainlength of train

⇒sl=12

⇒l=12s(1)

Now,

Time taken by the train to cross the platform =speed of trainlength of train+length of platform

⇒30=sl+300

⇒30s=12s+300(From (1))

⇒30s−12s=300

⇒s=18300=350m/s=350×518=60km/hr

Hence the speed of the train is 60km/hr.