GATE 2019 MT – Question 9
General Aptitude · Quantitative Aptitude: Data Interpretation, Arithmetic and Number Computation · 2 marks · Multiple choice
Two trains leave the same point at 7 AM, one north at 80 km/h and the other south at 100 km/h. At what time are they 540 km apart?
- 9 AM
- 10 AM
- 11 AM
- 11:30 AM
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Show answer and explanation
Correct answer: (B) 10 AM
Explanation
Opposite-direction motion makes separation increase at 80+100 = 180 km/h. Time to 540 km is 540/180 = 3 hours. Three hours after 7 AM is 10 AM, B.
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