Listen to the teenagers speaking about space exploration. As you listen to their comments, complete the following sentences. The first letters of the missing words will help you.

1.30:15=2 часа - время автомобиля за первую часть пути
2.120+30=150км - весь путь
3. 150:(3+2)=30км/ч - средняя скорость на всем пути