Question

Каток выровнял 750 метров дороги за 3/4 часа. Сколько километров дороги он выровняет за час если будет работать с той же продуктивностью.?

Answer 1

Если за 3/4 часа он выравнивает 750 метров. То за час он выравнивает: 750÷3×4=1000метров

Answer 2

1)750:3=250(м за 1\4 часа)
2)250х4=1000 м за 1 час.
3)1 км=1000м
Ответ. 1 км

Answer 3

Calculation of Road Length per Hour

To calculate the length of road that can be leveled in one hour, we need to determine the productivity rate of the roller.

Given that the roller leveled 750 meters of road in 3/4 of an hour, we can calculate the productivity rate as follows:

Productivity rate = Length of road leveled / Time taken

Substituting the given values:

Productivity rate = 750 meters / (3/4 hour)

To simplify the calculation, we can convert 3/4 hour to minutes:

3/4 hour = 45 minutes

Productivity rate = 750 meters / 45 minutes

Now, let's calculate the productivity rate:

Productivity rate = 750 meters / 45 minutes = 16.67 meters per minute

Therefore, the roller can level approximately 16.67 meters of road per minute.

To determine the length of road that can be leveled in one hour, we need to convert the productivity rate from meters per minute to kilometers per hour.

1 kilometer = 1000 meters 1 hour = 60 minutes

Converting the productivity rate:

16.67 meters per minute = (16.67 meters/minute) * (60 minutes/hour) = 1000 meters/hour

Therefore, the roller can level approximately 1 kilometer of road per hour if it continues to work at the same productivity rate.

Please note that the above calculation assumes a constant productivity rate and does not take into account any potential variations or limitations that may affect the roller's performance.