Two trains leave Agra for Calcutta at 9:00 a.m. and 9:30 a.m., respectively, and travel at 240 km/h and 300 km/h, respectively. How many kilometres from Agra will the two trains meet?
Answer & explanation
Correct answer: option 3
Distance = Speed × Time
Relative Speed when moves in same direction = 300 - 240 = 60 km/h
Distance traveled by 1st train from 9:00 am to 9:30 am = 240 × 0.5 = 120 km
Remaining distance = 240 - 120 = 120 km
Time when both trains meet = \(\frac{Distance}{Speed}\)
= \(\frac{120}{60}\) = 2 hours
Total distance traveled by faster train = 300 × 2 = 600 km