Question

Катер первые 3 часа двигался со скоростью 30 километров в час а затем он увеличил скорость на 10 километров в час и находился в пути и еще 2 часа какое расстояние преодолел за все это время катер решите задачу по действиям и выражением

Answer 1

S1=30км/ч*3ч=90 км
S2=(30+10)*2=40км/ч*2ч=80 км
S=S1+S2=90км+80км=170 км

Answer 2

1) 3 * 30 =90 км
2)2 * (10+30)=80 км
3)80+90=170 км
или
1)3*30+2*(10+30)=170км

Answer 3

Problem Analysis

We are given that a boat traveled at a speed of 30 kilometers per hour for the first 3 hours, and then increased its speed by 10 kilometers per hour for the next 2 hours. We need to find the total distance traveled by the boat during this time.

Solution

To solve this problem, we can calculate the distance traveled during the first 3 hours and add it to the distance traveled during the next 2 hours.

Let's calculate the distance traveled during the first 3 hours: - Speed = 30 kilometers per hour - Time = 3 hours - Distance = Speed * Time = 30 km/h * 3 h = 90 kilometers

Now, let's calculate the distance traveled during the next 2 hours: - Speed = 30 km/h + 10 km/h = 40 kilometers per hour (since the speed increased by 10 km/h) - Time = 2 hours - Distance = Speed * Time = 40 km/h * 2 h = 80 kilometers

Finally, let's calculate the total distance traveled by adding the distances from the first 3 hours and the next 2 hours: - Total Distance = Distance during the first 3 hours + Distance during the next 2 hours = 90 km + 80 km = 170 kilometers

Therefore, the boat traveled a total distance of 170 kilometers during this time.

Answer

The boat traveled a total distance of 170 kilometers during the first 3 hours at a speed of 30 kilometers per hour and the next 2 hours at a speed of 40 kilometers per hour.