Question

A 150 m long, train crosses a platform in 15s. What is the length of the platform if the speed of the train is 90km/h.​

Answer 1

Answer:

the answer is 225

Step-by-step explanation:

make it as brain list

Answer 2

Given:

• A 150 m long, train crosses a platform in 15s.

• Speed of the train is 90km/h.

To Find:

• The length of the platform.

Solution:

Let ,

• The length of the platform be a m

We know that,

S =D/T

Using above formula and A.T.Q, we have,

$\sf \large{ \frac{a + 150}{90 \times \frac{5}{18}} = 15}$

$\sf \to \: \: { \frac{a + 150}{25} = 15}$

$\sf \to \: \: {a + 150 = 15 \times 25}$

$\sf \to \: \: {a + 150 = 375}$

$\sf \to \: \: {a = 375 - 150}$

$\sf \to \: \: {a = 225m}$

Therefore, the length of the platform is 225m.