The two-train algebra problem

• Two stations A and B are 2,000 miles apart with trains at 200 mph; the B train leaves two hours early — how long does the A train travel before they meet?

A host poses an algebra challenge from a nursing student's homework: stations A and B are 2,000 miles apart, trains run 200 mph; the B train leaves two hours before the A train — how long must the A train travel before they meet? Listeners and chat get 15 minutes; Joel Kahn (chat) is barred from answering early. Background math music: 'Supper Time' by Blue Lou Morton.