Question

Из 2 пунктов удалённых друг от друга на30 км выехали одновременно в одном направлении два мотоциклиста . скорость первого 40 км/ч второго 50 км/ч через сколько часов второй догонит первого

Answer 1

Если не ошибаюсь:
50-40=10
30:10=3

Answer 2

Через 3.........................

Answer 3

Problem Analysis

Two motorcyclists start from points 30 km apart and travel in the same direction. The first motorcyclist travels at a speed of 40 km/h, and the second motorcyclist travels at a speed of 50 km/h. We need to determine how long it will take for the second motorcyclist to catch up to the first.

Solution

To find out when the second motorcyclist will catch up to the first, we can use the concept of relative speed. The relative speed of the second motorcyclist with respect to the first is the difference between their speeds, which is 50 km/h - 40 km/h = 10 km/h.

We can use the formula: \[ \text{Time} = \frac{\text{Distance}}{\text{Relative Speed}} \]

Substituting the values, we get: \[ \text{Time} = \frac{30 \text{ km}}{10 \text{ km/h}} = 3 \text{ hours} \]

Conclusion

The second motorcyclist will catch up to the first motorcyclist in 3 hours.