Question

Велосипедист проехал в первый час 18 целых 3/8 км, а во второй час- на 1 целую 4/5 больше, чем в первый. За эти два часа он проехал на 20 целых 1/5 км больше, чем в третий час. Какой путь проехал велосипедист за все 3 часа?

Answer 1

1) 18_3/8 + 1_4/5 = 18_15/40 + 1_32/40 = 19_47/40 = 20_7/40 км проехал за второй час
2) 20_1/5 - 20_7/40 = 20_8/40 - 20_7/40 = 1/40 км проехал за третий час
3) 20_7/40 + 1/40 = 20_8/40 = 20_1/5 км проехал за три часа

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Answer 2

Problem Analysis

We are given information about a cyclist's distance traveled in three consecutive hours. In the first hour, the cyclist traveled 18 3/8 km. In the second hour, the cyclist traveled 1 4/5 km more than in the first hour. And in the third hour, the cyclist traveled 20 1/5 km more than in the second hour. We need to find the total distance traveled by the cyclist in these three hours.

Solution

To find the total distance traveled by the cyclist in three hours, we need to add up the distances traveled in each hour.

Let's break down the problem step by step:

1. In the first hour, the cyclist traveled 18 3/8 km. 2. In the second hour, the cyclist traveled 1 4/5 km more than in the first hour. So, the distance traveled in the second hour is the distance traveled in the first hour plus 1 4/5 km. 3. In the third hour, the cyclist traveled 20 1/5 km more than in the second hour. So, the distance traveled in the third hour is the distance traveled in the second hour plus 20 1/5 km.

To find the total distance traveled in three hours, we add up the distances traveled in each hour.

Let's calculate the total distance:

1. Distance traveled in the first hour: 18 3/8 km. 2. Distance traveled in the second hour: (18 3/8 km) + (1 4/5 km). 3. Distance traveled in the third hour: (18 3/8 km + 1 4/5 km) + (20 1/5 km).

Now, let's perform the calculations:

1. Distance traveled in the first hour: 18 3/8 km. 2. Distance traveled in the second hour: (18 3/8 km) + (1 4/5 km) = 18 3/8 km + 1 4/5 km = 20 7/40 km. 3. Distance traveled in the third hour: (20 7/40 km) + (20 1/5 km) = 20 7/40 km + 20 1/5 km = 40 27/200 km.

Therefore, the cyclist traveled a total distance of 40 27/200 km in three hours.

Answer

The cyclist traveled a total distance of 40 27/200 km in three hours.

Note: The sources provided did not contain the exact solution to the problem. The solution was derived using mathematical operations based on the given information.