Two trains are running on a parallel track in same direction Train A comes from behind and overtake ...........

Quantitative Aptitude ( CCS) Problems on trains

Two trains are running on a parallel track in same direction. Train A comes from behind and overtake train B in 60seconds. One person in train A observes that he covers train B in 40seconds. If the speed of trains in the ratio of 3:1, then find the ratio of length of train A & B?

1:3

3:2

2:3

1:2

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Explanation:

Solution:
In this question speed doesn’t matter because we know …..length = speed*time. Speed remains same in both cases so it will cancel out.
Now length of A+B =60unints
Length of B = 40 units
Length of A = 60-40 =20units
A : B
20 : 40
1 : 2