IKMC 2027 - Grades 7-8 - Self-study SET 11 - Thematic Batch 3 Question 4

Two trains travel towards each other. One is 350 m long and travels at 60 km/h; the other is 420 m long and travels at 50 km/h. What is the distance, in metres, from the point where their fronts meet to the point where their tails meet?