Question

Мотоциклист ехал 3 ч соскоростью 60 км/ч и 2 ч со скоростью 70км/ч. Какое расстояние он проехал за всё это время? Объясни, что обозначает выражение 60•3-70•2

Answer 1

Это выражение означает на сколько больше  расстояние которое он проехал за 3 часа со скоростью 60 км/ч и которое он проехал за 2 часа со скоростью 70 км/ч.

Answer 2

Calculation of Distance Traveled

To calculate the distance traveled by the motorcyclist, we need to multiply the speed by the time for each segment of the journey and then sum up the distances.

The motorcyclist traveled at a speed of 60 km/h for 3 hours and at a speed of 70 km/h for 2 hours. To find the total distance traveled, we can use the formula:

Total distance = (speed1 * time1) + (speed2 * time2)

Substituting the given values into the formula, we have:

Total distance = (60 km/h * 3 hours) + (70 km/h * 2 hours)

Now let's calculate the distance:

Total distance = (180 km) + (140 km) = 320 km

Therefore, the motorcyclist traveled a total distance of 320 kilometers during the given time.

Explanation of the Expression 60•3-70•2

The expression 60•3-70•2 represents a mathematical calculation involving multiplication and subtraction.

To break it down:

- 60•3 means multiplying 60 by 3, which equals 180. - 70•2 means multiplying 70 by 2, which equals 140.

Finally, subtracting 140 from 180 gives us a result of 40.

So, the expression 60•3-70•2 simplifies to 40.

I hope this explanation helps! Let me know if you have any further questions.