To travel 600 km, train A takes 8 hours more than train B. If, however, the speed of train A is doubled, it takes 2 hours less than B. What is the speed of train B?
Q1. To travel 600 km, train A takes 8 hours more than train B. If, however, the speed of train A is doubled, it takes 2 hours less than B. What is the speed of train B?
Answer: 50 km/h
Explanation: Setting up equations with speeds A and B: 300/A = 10 gives A = 30 km/h, then 600/B = 12 gives B = 50 km/h.