Question

Машина скорой помощи ехала 20 минут по шоссе со скоростью 3 км/мин и по проселочной дороге со скоростью 2 км/мин. На весь путь она затратила 25 мин. Какое расстояние проехала машина скорой помощи ?

Answer 1

20*3=60(км) проехала по шоссе
25-20=5(м)  время  по дороге
5*2=10 (км) ехала по дороге
60+10=70(км)расстояние проехала машина всего.

Answer 2

Calculation of the Distance Traveled by the Ambulance

To calculate the distance traveled by the ambulance, we need to consider the time it spent on the highway and the time it spent on the dirt road.

Let's denote: - Time spent on the highway as t1 (20 minutes) - Time spent on the dirt road as t2 (unknown) - Total time for the journey as t (25 minutes) - Speed on the highway as v1 (3 km/min) - Speed on the dirt road as v2 (2 km/min) - Distance traveled on the highway as d1 (unknown) - Distance traveled on the dirt road as d2 (unknown)

We can use the formula distance = speed × time to calculate the distances traveled on each segment of the journey.

Calculating the Distance on the Highway

The distance traveled on the highway can be calculated using the formula d1 = v1 × t1.

Substituting the given values: - v1 = 3 km/min - t1 = 20 min

We can calculate: - d1 = 3 km/min × 20 min = 60 km

Calculating the Distance on the Dirt Road

The distance traveled on the dirt road can be calculated using the formula d2 = v2 × t2.

We know that the total time for the journey is t = 25 min, and the time spent on the highway is t1 = 20 min. Therefore, the time spent on the dirt road can be calculated as t2 = t - t1.

Substituting the given values: - t = 25 min - t1 = 20 min

We can calculate: - t2 = 25 min - 20 min = 5 min

Now, we can calculate the distance on the dirt road: - d2 = v2 × t2 = 2 km/min × 5 min = 10 km

Total Distance Traveled

The total distance traveled by the ambulance is the sum of the distances on the highway and the dirt road: - Total distance = d1 + d2 = 60 km + 10 km = 70 km

Therefore, the ambulance traveled a distance of 70 kilometers.

Please note that the search results did not provide specific information to verify the calculation. However, the calculation is based on the given information and the formula for distance, speed, and time.