Question

A man walks $20km$, then travels a certain distance by train and then by bus as far as twice by the train. If the whole journey is of $70km$, how far did he travel by train?

Answer 1

Distance walked by man $=d_w=20km$

Let distance travelled by train $=d_t$

Distance travelled by bus $=d_B=2d_t$

$\text{total distance}-70km$

$d_w+d_t+d_B=70$

$20+d_t+2d_t=70$

$\therefore d_t=\frac{50}{3}km$