Question

Укажи с какой скоростью должен ехать автомобиль, чтобы пройти 30 км за 2\5 ч

Answer 1

2/5часа=150 минут 
V=S/T=150/30=5км/ч

Answer 2

30 : 2/5 = 30 * 5/2 = 150/2 = 75 км в час

Answer 3

Calculating Speed to Cover a Distance in a Given Time

To calculate the speed at which a car must travel to cover a distance of 30 km in 2/5 hours, we can use the formula:

Speed (V) = Distance (S) / Time (t)

Substituting the given values: V = 30 km / (2/5) hours

Calculation

Using the formula, we can calculate the speed: V = 30 / (2/5) = 30 * (5/2) = 75 km/h

So, the car must travel at a speed of 75 km/h to cover a distance of 30 km in 2/5 hours.

This calculation is based on the formula for speed and the given distance and time