Question

В составе товарного поезда 80 вагонов,причём крытых вагонов 35,цистерн 25,а остальные вагоны-платформы.Какую часть всех вагонов составляют крытые вагоны?во сколько раз платформ меньше,чем крытых вагонов?Сколько процентов всего состава составляют цистерны?

Answer 1

35/80 крытые

Платформ на 10 меньше

25/80

Answer 2

Calculating the Composition of the Freight Train

To calculate the composition of the freight train, we can use the given information about the number of covered wagons, tank wagons, and platform wagons.

1. Proportion of Covered Wagons: - The total number of covered wagons is 35. - The total number of wagons is 80.

The proportion of covered wagons in the total number of wagons can be calculated as: - Proportion of Covered Wagons = (Number of Covered Wagons / Total Number of Wagons) * 100%

Using the given values: - Proportion of Covered Wagons = (35 / 80) * 100% = 43.75%

Therefore, 43.75% of all the wagons are covered wagons.

2. Comparison of Platform Wagons to Covered Wagons: - The number of platform wagons can be calculated as the difference between the total number of wagons and the sum of covered wagons and tank wagons. - The number of tank wagons is 25.

The number of platform wagons can be calculated as: - Number of Platform Wagons = Total Number of Wagons - (Number of Covered Wagons + Number of Tank Wagons) - Number of Platform Wagons = 80 - (35 + 25) = 20

To find out how many times the number of platform wagons is less than the number of covered wagons: - Ratio of Platform Wagons to Covered Wagons = Number of Platform Wagons / Number of Covered Wagons - Ratio of Platform Wagons to Covered Wagons = 20 / 35 = 0.5714

Therefore, the number of platform wagons is approximately 0.5714 times less than the number of covered wagons.

3. Percentage of Tank Wagons: - The total number of tank wagons is 25. - The total number of wagons is 80.

The percentage of tank wagons in the total number of wagons can be calculated as: - Percentage of Tank Wagons = (Number of Tank Wagons / Total Number of Wagons) * 100% - Percentage of Tank Wagons = (25 / 80) * 100% = 31.25%

Therefore, 31.25% of the total composition of the train consists of tank wagons.

In summary, the composition of the freight train is as follows: - Covered Wagons: 43.75% - Platform Wagons: 20 - Tank Wagons: 31.25%

If you have any further questions or need additional information, feel free to ask!