The speed of a car is 50 kilometers per hour. There is a watch that is slow by 2 minutes every 5 hours. If you use the watch, what is the speed of the car? (keep one decimal place)

The speed of a car is 50 kilometers per hour. There is a watch that is slow by 2 minutes every 5 hours. If you use the watch, what is the speed of the car? (keep one decimal place)

The speed of this car is 50 × 5 △ 42930 ≈ 50.3 (km / h) a: the speed of this car is about 50.3 km / h