Question

За 2 години пішки і 1 годину на велосипеді турист подолав відстань 18 км, а за 1 годину і 2 години на велосипеді-27км. Яка швидкість туриста пішки і яка на велосипеді?

Answer 1

нехай х-швидкість пішки, у- на велосипеді

2х+у=18

х+2у=27

-4х-2у=-36

х+2у=27

-3у=-9

у=3

 

2х+3=18

2х=15

х=7,5

 

Answer 2

х - скорость пешком

у - скорость велосипедом

 

2х+у=18

х+2у=27

 

4х+2у=36

х+2у=27

 

3х=9

х=3

 

3+2у=27

 

2у=24

у=12

Answer 3

Calculation of Walking and Biking Speeds

To calculate the walking and biking speeds of the tourist, we can use the given distances and times.

The tourist covered a distance of 18 km in 2 hours of walking and 1 hour of biking, and a distance of 27 km in 1 hour of walking and 2 hours of biking.

Let's calculate the walking and biking speeds:

Walking Speed: - Distance: 18 km - Time: 2 hours - Speed = Distance / Time = 18 km / 2 hours = 9 km/h

Biking Speed: - Distance: 18 km - Time: 1 hour - Speed = Distance / Time = 18 km / 1 hour = 18 km/h

Now, let's calculate the walking and biking speeds for the second scenario:

Walking Speed: - Distance: 27 km - Time: 1 hour - Speed = Distance / Time = 27 km / 1 hour = 27 km/h

Biking Speed: - Distance: 27 km - Time: 2 hours - Speed = Distance / Time = 27 km / 2 hours = 13.5 km/h

So, the walking speed of the tourist is 9 km/h and the biking speed is 18 km/h for the first scenario, and the walking speed is 27 km/h and the biking speed is 13.5 km/h for the second scenario.