Question

Расстояние между двумя городами равно 285 км. Из одного города в другой выехал автомобиль со средней скоростью 65км/ч.Одновременно с автомобилем из второго города в первый выехал велосипедист, который ехал со скоростью 18км/Ч. Автомобиль и велосипедист встретились, когда автомобиль успел проехать 195км. Сколько часов был в пути велосипедист.?

Answer 1

1) 285 - 195 = 90 км (проехал велосипедист до места встречи)
2) 90 : 18 = 5 часов (ехал велосипедист)

Ответ: велосипедист был в пути 5 часов

Answer 2

Problem Analysis

To solve this problem, we need to find the time it took for the cyclist to meet the car. We know the distance between the two cities is 285 km, the car's speed is 65 km/h, and the cyclist's speed is 18 km/h. The car had traveled 195 km when they met. We can use this information to calculate the time the cyclist spent on the road.

Calculating the Time

Let's calculate the time it took for the cyclist to meet the car.

The time it took for the car to travel 195 km can be calculated using the formula: time = distance / speed

The remaining distance for the cyclist to cover is: 285 km - 195 km = 90 km

Using the formula: time = distance / speed

We can calculate the time it took for the cyclist to cover the remaining 90 km.

Solution

The time it took for the car to travel 195 km at a speed of 65 km/h is: time = 195 km / 65 km/h = 3 hours

The time it took for the cyclist to cover the remaining 90 km at a speed of 18 km/h is: time = 90 km / 18 km/h = 5 hours

Therefore, the cyclist was on the road for 5 hours.