Question

Велосипедист выехал из посёлка в 7 ч утра и,проехав 45 км со скоростью 9 км/ч,в полдень прибыл в город.С какой скоростью он должен ехать,что бы за это время проехать до другого города 65 км?

Answer 1

45 :9 =5 час ехал велосипедист
65 :5 = 13 км/час

Answer 2

1) 12-7=5 (ч) - время первое;
2)  65:5=13(км/ч)
Ответ: 13 км/ч.

Answer 3

Calculation of the Initial Speed:

To determine the speed at which the cyclist should travel to cover a distance of 65 km in the same amount of time, we can use the formula: Speed = Distance / Time.

Given that the cyclist traveled 45 km in the first 5 hours (from 7 am to 12 pm), we can calculate the time it took for the cyclist to cover this distance using the formula: Time = Distance / Speed.

Let's calculate the initial speed of the cyclist using the given information:

- Distance traveled: 45 km - Time taken: 5 hours

Speed = Distance / Time = 45 km / 5 hours = 9 km/h. Therefore, the initial speed of the cyclist was 9 km/h.

Calculation of the Required Speed:

To determine the speed at which the cyclist should travel to cover a distance of 65 km in the same amount of time, we can use the formula: Speed = Distance / Time.

Given that the cyclist covered the initial distance of 45 km in 5 hours, we can calculate the required speed using the formula: Speed = Distance / Time.

Let's calculate the required speed of the cyclist using the given information:

- Distance to be covered: 65 km - Time taken: 5 hours

Speed = Distance / Time = 65 km / 5 hours = 13 km/h.

Therefore, the cyclist should travel at a speed of 13 km/h to cover a distance of 65 km in the same amount of time.