Question

Велосипедист ехал 3 часа со скоростью 18км в час.Возвращался он другой дорогой, которая была длиннее на 10км, и скорость велосипедиста уменьшилась на 2 км в час. За какое время велосипедист преодолел обратный путь?

Answer 1

1.  3*18=54 км дорога в одну сторону

2. 54+10= 64 км дорога обратно

3. 18-2 = 16 км/час скорость велосипедиста обратно

4. 64/16=4 часа преодолел дорогу обратно

Ответ: за 4 часа преодолел обратный путь.

Answer 2

1)18 х 3 = 54(км) весь путь

2)54 +10 = 64(км) обратная дорога

3) 18-2 = 16(км в час) скорость на обратном пути

4) 64 :16 = 4 (часа) затратил на обратную дорогу

 

ОТВЕТ: 4 часа

Answer 3

Calculation of the Return Journey Time

To calculate the time taken for the return journey, we need to consider the following information:

- The cyclist traveled for 3 hours at a speed of 18 km/h on the outbound journey. - On the return journey, the cyclist took a different route that was 10 km longer. - The cyclist's speed on the return journey decreased by 2 km/h.

To find the time taken for the return journey, we can use the formula:

Time = Distance / Speed

Let's calculate the time taken for the return journey step by step:

1. Calculate the distance of the outbound journey: - Time = 3 hours - Speed = 18 km/h - Distance = Time * Speed = 3 * 18 = 54 km

2. Calculate the speed on the return journey: - Speed on the outbound journey = 18 km/h - Decrease in speed = 2 km/h - Speed on the return journey = Speed on the outbound journey - Decrease in speed = 18 - 2 = 16 km/h

3. Calculate the distance of the return journey: - Distance of the outbound journey = 54 km - Additional distance on the return journey = 10 km - Distance of the return journey = Distance of the outbound journey + Additional distance = 54 + 10 = 64 km

4. Calculate the time taken for the return journey: - Distance of the return journey = 64 km - Speed on the return journey = 16 km/h - Time = Distance / Speed = 64 / 16 = 4 hours

Therefore, the cyclist took 4 hours to complete the return journey.