The train needs to travel 560 km. It has already covered 4/8 of the way. How fast does it need

The train needs to travel 560 km. It has already covered 4/8 of the way. How fast does it need to go to cover the remaining distance in 4 hours?

1) 4 \ 8 = 1 \ 2 – half way (we have canceled the fraction)
2) 560 \ 2 = 280 km left to drive (since half the way, it is more expedient to divide it by 2 at once)
3) 280/4 = 70 km / h
Answer: To go the rest of the way in 4 hours, the train must travel at a speed of 70 kilometers per hour