Question

машина сначала проехала 30 мин. со скоростью 90 км/ч, а затем 1 ч 30 мин со скоростью 80км/ч. Какое расстояние проехала машина?

Answer 1

Calculation of the Distance Traveled by the Car

To calculate the distance traveled by the car, we need to find the sum of the distances covered during the two different time intervals.

1. First, let's calculate the distance covered during the first interval of 30 minutes at a speed of 90 km/h.

- Time: 30 minutes = 0.5 hours - Speed: 90 km/h - Distance = Speed x Time = 90 km/h x 0.5 hours = 45 km

2. Next, let's calculate the distance covered during the second interval of 1 hour and 30 minutes at a speed of 80 km/h.

- Time: 1 hour and 30 minutes = 1.5 hours - Speed: 80 km/h - Distance = Speed x Time = 80 km/h x 1.5 hours = 120 km

3. Finally, let's find the total distance traveled by adding the distances covered during the two intervals.

- Total Distance = Distance of the first interval + Distance of the second interval = 45 km + 120 km = 165 km

Therefore, the car traveled a total distance of 165 km.