Question

Велосипедист и мотоциклист выехали одновременно, направляясь из деревни. Скорость велосипедиста - 9,4 км/ч, а скорость мотоциклиста в 3 раза больше. Какое расстояние стало между ними через 2 часа? В ответе указать только число.

Answer 1

1) 9.4 х 2= 18.8 - скорость мотоцикла
2)18.8+9.4 х 2=56.4 км

Answer 2

Problem Analysis

We are given the speeds of a cyclist and a motorcyclist, and we need to find the distance between them after 2 hours. The speed of the cyclist is 9.4 km/h, and the speed of the motorcyclist is 3 times greater.

Calculation

To find the distance between them after 2 hours, we need to calculate the distance traveled by each of them in 2 hours and then find the difference between the two distances.

Let's calculate the distance traveled by the cyclist first. The formula to calculate distance is:

Distance = Speed × Time

For the cyclist: Speed = 9.4 km/h Time = 2 hours

Distance_cyclist = 9.4 km/h × 2 hours

Now let's calculate the distance traveled by the motorcyclist. The speed of the motorcyclist is 3 times greater than the speed of the cyclist.

Speed_motorcyclist = 3 × Speed_cyclist

Distance_motorcyclist = Speed_motorcyclist × Time

Substituting the value of Speed_motorcyclist:

Distance_motorcyclist = (3 × 9.4 km/h) × 2 hours

Finally, we can find the distance between them by subtracting the distance traveled by the cyclist from the distance traveled by the motorcyclist:

Distance_between = Distance_motorcyclist - Distance_cyclist

Let's calculate the values:

Distance_cyclist = 9.4 km/h × 2 hours = 18.8 km

Distance_motorcyclist = (3 × 9.4 km/h) × 2 hours = 56.4 km

Distance_between = 56.4 km - 18.8 km = 37.6 km

Therefore, the distance between the cyclist and the motorcyclist after 2 hours is 37.6 km.