Question

A train completes a certain distance in 6 hours traveling at a uniform speed of 60 km/hr. How long will the train take to cover the same distance if it travels at a uniform speed of 80 km/hr?

Answer 1

Answer:

distance=speed×time

d=60×6

d=360km

same distance

80km/h speed

distance 360km

time=distance/speed

time=360/80

time=4.5hr Answer

Step-by-step explanation:

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Answer 2

Answer:

4½ hours.

Step-by-step explanation:

Given:

Case 1 :

Time taken to cover the certain distance = 6 hours.

Initial speed = 60 km/hr.

So,

Distance covered = (Time taken) × (Speed) = 60 × 6 = 360 km.

Case 2 :

Distance covered = 360 km (since distance covered is the same as that in 1st case, according to the question).

New speed = 80 km/hr.

So,

Time taken = (Distance covered) ÷ (Speed) = 360/80 = 4½ hours.

Therefore,

The train will take 4½ hours to cover the same distance.

Formula used in the question:

(Distance) ÷ (Time) = Speed.