X and Y are two stations which are 280 km apart A train starts at a certain time from X and travels ...........

Quantitative Aptitude (CGL) Problems on trains

X and Y are two stations which are 280 km apart. A train starts at a certain time from X and travels towards Y at 60 km/h. After

2 hours, another train starts from Y and travels towards X at 20 km/h. After how many hours does the train leaving from X

meets the train which left from Y?

This questions was previously asked in

SSC CGL 9th March 2020 Shift-1

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2 hours

6 hours

3 hours

4 hours

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Explanation:

Distance between X and Y = 280 km
Speed of train which starts from station A = 60 km/hr
Distance covered in 2 hours = 60 $$\times$$ 2 = 120 km
Remaining distance = 280 - 120 = 160 km
Relative speed in opposite direction = 60 + 20 = 80 km/hr
Time taken to cover 160 km = 160/80 = 2 hr
Time taken when train leaving from X meets the train which left from Y = 2 + 2 = 4 hr

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