A man walks 10 km, then travels a certain distance by train and then b

1.	A man walks 10 km, then travels a certain distance by train and then by bus as far as twice by the train. 1f the whole journey is of 70km, how far did he travel by train?
Answer» The distance travelled by walk = 10 km Let the distance travelled by train = x km say. The distance travelled by bus = 2 × x = 2x km ∴ 10 + x + 2x = 70 ⇒ 3x = 70 – 10 ⇒ 3x = 60 ⇒ x = \(\frac{60}3\) = 20 ⇒ x = 20 ∴ The distance travelled by train = 20 km.

A man walks 10 km, then travels a certain distance by train and then by bus as far as twice by the train. 1f the whole journey is of 70km, how far did he travel by train?

Answer»

The distance travelled by walk = 10 km

Let the distance travelled by train = x km say.

The distance travelled by bus

= 2 × x = 2x km

∴ 10 + x + 2x = 70

⇒ 3x = 70 – 10

⇒ 3x = 60

⇒ x = \(\frac{60}3\) = 20

⇒ x = 20

∴ The distance travelled by train = 20 km.