Question

a train covers 300 km in 4 hours find speed​

Answer 1

Answer:

We have,

Distance covered =300 km

Let, the speed of the train =x km

∴t

1

=

x

300

....(1)

Distance=300 km

Speed=(x−10)km

∴t

2

=

(x−10)

300

....(2)

Given eqn (1)−(2)=1 hr

∴

(x−10)

300

−

x

300

=1

(x−10)x

[300x−300(x−10)]

=1

300x−300x+3000=(x−10)x

3000=(x−10)x

Let, x=60

∴3000=(60−10)60

Therefore speed of the train (x)=60 km/hr

Step-by-step explanation:

STEP BY STEP.

YOU ARE HELPFUL

Answer 2

Answer:

75 kilometers per hour

Step-by-step explanation:

We know that,

Speed = Distance/Time or Distance ÷ Time

= 300 kilometres/4 hours or 300 kilometres ÷ 4 hours

= 300 ÷ 4 = 75 km/h

Therefore, the train's speed per hour is 75km/h