Question

Мотоциклист и велосипедист едут навстречу друг другу. Через сколько часов они встретятся ,если расстояние между ними 272 км, скорость велосипедиста 4 км /ч,а скорость мотоциклиста 12 км/ч?

Answer 1

Совместная скорость движения мотоциклиста и велосипедиста равна 4+12= 6 км/ч
Они встретятся через 272 /16 = 17 часов

Answer 2

Problem Analysis

We are given the following information: - Distance between the motorcyclist and the cyclist: 272 km - Speed of the cyclist: 4 km/h - Speed of the motorcyclist: 12 km/h

We need to determine how many hours it will take for them to meet.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it will take for the cyclist and the motorcyclist to meet.

Calculation

The time it will take for the cyclist to meet the motorcyclist can be calculated as follows:

Time taken by the cyclist = Distance / Speed of the cyclist

Substituting the given values:

Time taken by the cyclist = 272 km / 4 km/h

Calculating the above expression:

Time taken by the cyclist = 68 hours

Similarly, the time taken by the motorcyclist can be calculated as follows:

Time taken by the motorcyclist = Distance / Speed of the motorcyclist

Substituting the given values:

Time taken by the motorcyclist = 272 km / 12 km/h

Calculating the above expression:

Time taken by the motorcyclist = 22.67 hours

Since the motorcyclist is faster, they will meet before the cyclist. Therefore, the total time it will take for them to meet is equal to the time taken by the motorcyclist, which is approximately 22.67 hours.

Answer

The motorcyclist and the cyclist will meet approximately after 22.67 hours.

Note: The above answer is based on the assumption that the motorcyclist and the cyclist start at the same time and continue at a constant speed until they meet.