Question

1. Два лыжника соревновались на выносливость. Первый лыжник за 5 часов проехал 75км. Скорость второго лыжникаоказалась на 3 км/ч меньше скорости первого, но он проехалдистанцию на 33 км больше. На сколько часов второй лыжникбыл в пути больше, чем первый лыжник?​

Answer 1

Ответ:

На 4 часа второй лыжник  был в пути больше, чем первый лыжник

Пошаговое объяснение:

1) 75:5=15(км) - проходит первый лыжник в час

2) 15-3=12(км/ч) - скорость второго лыжника

3) 75+33=108(км/ч) - прошёл второй лыжник

4) 108:12=9(ч) - время, за которое второй лыжник прошёл 108км

5) 9-5=4(ч) - второй лыжник  был в пути больше, чем первый лыжник

        на

Answer 2

Ответ:

75/5=15км/ч

15-3=12

33/12=2.75

33/15=2.20

2.75-2.20=0.55ч

Ответ на 55 минут

Answer 3

Problem Analysis

We are given the following information: - The first skier traveled a distance of 75 km in 5 hours. - The second skier's speed was 3 km/h less than the first skier's speed. - The second skier traveled a distance that was 33 km longer than the first skier.

We need to find out how many hours longer the second skier was in transit compared to the first skier.

Calculation

Let's assume the speed of the first skier is x km/h.

According to the given information, the second skier's speed is (x - 3) km/h.

We can use the formula distance = speed × time to calculate the time taken by each skier.

For the first skier: - Distance = 75 km - Speed = x km/h - Time = 5 hours

For the second skier: - Distance = 75 km + 33 km = 108 km (33 km longer than the first skier) - Speed = (x - 3) km/h - Time = ?

Using the formula, we can set up the following equations:

For the first skier: 75 = x × 5 For the second skier: 108 = (x - 3) × t

We can solve these equations to find the value of t, which represents the time taken by the second skier.

Solution

Let's solve the equations to find the value of t.

From the first equation, we can solve for x: x = 75 / 5 = 15 km/h.

Substituting the value of x into the second equation, we get: 108 = (15 - 3) × t.

Simplifying the equation, we have: 108 = 12t.

Solving for t, we find: t = 108 / 12 = 9 hours.

Therefore, the second skier was in transit for 9 hours, which is 4 hours longer than the first skier.

Answer

The second skier was in transit for 4 hours longer than the first skier.