Question

На первый автомобиль погрузили 6,8 т угля, а на второй двадцать одну семнадцатую этого количества. Первый автомобиль сделал 9рейсов , а второй 7 рейсов . Какой автомобиль перевёз больше угля и на сколько от н.

Answer 1

6,8т= на 1 грузовик
6,8:17*21=0,4*21=8,4 т на 2 грузовик
6,8*9=61,2 т на 1 грузовик
8,4*7=58,8 т на 2 грузовик
61,2-58,8=2,4 т на столько больше угля  перевез 1 грузовик

Answer 2

Problem Analysis

We are given information about two cars that are transporting coal. The first car is loaded with 6.8 tons of coal, while the second car is loaded with 21/17 (twenty-one seventeenths) of that amount. The first car makes 9 trips, while the second car makes 7 trips. We need to determine which car transported more coal and by how much.

Solution

To compare the amount of coal transported by each car, we need to calculate the total amount of coal transported by each car.

Let's start by calculating the amount of coal transported by the second car. We know that the second car carried 21/17 of the amount carried by the first car, which was 6.8 tons. So, the amount of coal transported by the second car is:

(21/17) * 6.8 tons

To calculate the total amount of coal transported by the second car, we multiply this amount by the number of trips made by the second car, which is 7:

(21/17) * 6.8 tons * 7 trips

Now, let's calculate the amount of coal transported by the first car. We know that the first car carried 6.8 tons of coal and made 9 trips. So, the total amount of coal transported by the first car is:

6.8 tons * 9 trips

To determine which car transported more coal, we compare the total amounts of coal transported by each car. If the total amount of coal transported by the second car is greater than the total amount transported by the first car, then the second car transported more coal. Otherwise, the first car transported more coal.

To find the difference in the amount of coal transported, we subtract the total amount transported by the first car from the total amount transported by the second car.

Let's calculate the values:

Total amount of coal transported by the second car: (21/17) * 6.8 tons * 7 trips

Total amount of coal transported by the first car: 6.8 tons * 9 trips

Difference in the amount of coal transported: (Total amount transported by the second car) - (Total amount transported by the first car)

Calculation

Let's calculate the values using the given information:

Total amount of coal transported by the second car: (21/17) * 6.8 tons * 7 trips = 8.4 tons * 7 trips = 58.8 tons

Total amount of coal transported by the first car: 6.8 tons * 9 trips = 61.2 tons

Difference in the amount of coal transported: 58.8 tons - 61.2 tons = -2.4 tons

Answer

Based on the calculations, the first car transported more coal, with a difference of 2.4 tons.