Question

a train has to cover a distance of 1200 km in 16 hours. the first 800 km covered by the train in 10 hours. what should be the speed of the train to cover the rest of the distance. also find the average speed of the train

Answer 1

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Answer 2

Answer:

The required speed is 66.67km/hr and average speed is 75km/hr.

Explanation:

Given that,

The total distance required to be covered by train=1200km

The total time in which distance must be covered=16 hours

Average speed can be found using relation

$V _{avg} = \frac{total \: distance}{total \: time}$

By substituting known values,we get

$V _{avg} = \frac{1200km}{16hr} = 75kmhr {}^{ - 1}$

Also given that first 800km is covered in 10 hours.

Therefore remaining distance is

$1200 - 800 = 400km$

The remaining time is

$16 - 10 = 6 \: hours$

Hence,the required speed can be found as

$V = \frac{400km}{6hr} = 66.67kmhr {}^{ - 1}$

Therefore,The required speed is 66.67km/hr and average speed is 75km/hr.

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