Question

answer this question
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Answer 1

Answer:

I hope it will helps you

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Answer 2

Answer:

20 km

Step-by-step explanation:

$let \: the \: distance \: covered \: by \: train \: be \: x. \\ \\ distance \: covered \: by \: waking \: = 10km \\ distance \: covered \: by \: train \: = x \\ distance \: covered \: by \: bus \: = 2x$

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$therefore, \: 10km + x + 3x = 70km \\ = 10km + 3x = 70km \\ = 3x = 70km - 10km = 60km \\ x = \frac{60km}{3} = 20km \\ distance \: travelled \: by \: train \: = x \: = 20km$