Question

Велосипед ехал 2 ч с некоторой скоростью. После того как он проедет еще 4 км, его путь станет равным 30 км. С какой скоростью ехал велосипедист?

Answer 1

30-4=26 км проехал велосипедист за 2 часа
26:2=13 км/ч скорость велосипедиста
Ответ:13 км/ч ехал велосипедист

Answer 2

30-4=26 км проехал велосипедист за 2 часа
26:2=13 км/ч скорость велосипедиста
Ответ:13 км/ч

Answer 3

Problem Analysis

We are given that a bicycle traveled for 2 hours with a certain speed. After traveling an additional 4 km, the total distance covered by the bicycle became 30 km. We need to find the speed at which the cyclist was traveling.

Solution

Let's assume the speed of the bicycle is v km/h.

The formula to calculate the distance covered by an object is given by distance = speed × time.

According to the problem, the bicycle traveled for 2 hours, so the distance covered in those 2 hours is 2v km.

After traveling an additional 4 km, the total distance covered by the bicycle became 30 km. Therefore, the distance covered in the additional 4 km is 30 - 2v km.

We can set up the following equation to solve for the speed of the bicycle:

2v + 4 = 30 - 2v

Simplifying the equation, we get:

4v = 26

Dividing both sides of the equation by 4, we find:

v = 6.5

Therefore, the speed at which the cyclist was traveling is 6.5 km/h.

Answer

The cyclist was traveling at a speed of 6.5 km/h.