2 May 1994
I can't wait until school is over. Only two more years and I can finally begin a new chapter of my life. Today, dad helped me out with my homework again. This maths exercise was really confusing, but he helped me figure out how to solve it. He's really good with numbers. No wonder he's so successful with his shop. Yesterday, he asked me again if I wanted to take over his shop. I know it'd make him happy, but I have my own plans and dreams. Once I graduate from school, I'm going to become a top manager and create my own business. I can't wait! Time to sleep now. But first I'll review this maths exercise once again, just to make sure I can present the right answers in class tomorrow.
Due to a technical error, two trains were accidently assigned to the same rail track and are now approaching each other. The communication system of both trains is broken and the conductors don't know about the imminent danger they're in.
By the time a supervisor at one of the offices notices the problem, the trains are only 140 km away from each other. The speed of train A is 160 km/h; the speed of train B is 120 km/h.
There's a manual switch that could stop both trains from colliding, but the supervisor is 6,300 metres away from it and he needs to get there first. If he runs at an average speed of 14 km/h, will he be in time to save the trains?
Task: Solve the math exercise.
- 3 points for the correct answer
- 7 points for the correct explanation