SSC CHSL 20 Dec 2015 Shift 1 Paper

Question : 142 of 200

Marks: +1, -0

Two trains start at the same time from Aligarh and Delhi and proceed towards each other at the rate of 14 km and 21 km per hour respectively. When they meet, it is found that one train has travelled 70 km more than the other. The distance between two stations is

350 km
140 km
210 km
300 km

Validate

Solution:

Let distance travelled by one train be 'x' and other train be 'x + 70'
Two trains take same time, thus equation can be written as

D_1/D_2=S_1/S_2

21/14={x+70}/x

⇒

21x = 14x + 980

⇒ 7x = 980

⇒

x = 140

Distance between two trains

(2x + 70) = 2(140)+70=350

kms
Hence, option A is the correct answer.

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