Question

Три вантажівки перевезли деякий вантаж.Перша вантажівка перевезли 40% всього вантажу,друга 25 того що залишилося,а третя решту 9т.Скільки вантажу перевезено разом?

Answer 1

1) 100% - 40% = 60% вантажу залишилося після того, як перша вантажівка відвіз свій вантаж2) 60% = 0,625% = 0,250,6 * 0,25 = 0,15 всього вантажу - перевіз друга вантажівка3) 0,6 - 0,15 = 0,45 всього вантажу перевіз третій вантажівка4) 9: 0,45 = 900: 45 = 20 т вантажу - було перевезено трьома вантажівкамиВідповідь: трьома вантажівками було перевезено 20 т вантажу.

Answer 2

Calculation of Total Cargo Transported

To calculate the total cargo transported, we can follow the information provided in the question. Let's break it down step by step:

1. The first truck transported 40% of the total cargo. 2. The second truck transported 25% of what was left after the first truck. 3. The third truck transported the remaining 9 tons of cargo.

To find the total cargo transported, we need to determine the amount of cargo each truck carried and then add them together.

Calculation Steps:

1. Let's assume the total cargo transported is represented by the variable "x". 2. The first truck transported 40% of the total cargo, which is 0.4x. 3. The second truck transported 25% of what was left after the first truck. This means the second truck transported 25% of (100% - 40%) of the total cargo. Mathematically, this can be represented as 0.25 * (1 - 0.4) * x. 4. The third truck transported the remaining 9 tons of cargo. 5. We can set up an equation to represent the total cargo transported: ``` 0.4x + 0.25 * (1 - 0.4) * x + 9 = x ```

Now, let's solve the equation to find the value of "x" and determine the total cargo transported.

Solving the Equation:

Simplifying the equation: ``` 0.4x + 0.25 * 0.6 * x + 9 = x ```

Combining like terms: ``` 0.4x + 0.15x + 9 = x ```

Subtracting "x" from both sides: ``` 0.4x + 0.15x + 9 - x = 0 ```

Simplifying further: ``` 0.55x + 9 - x = 0 ```

Combining like terms: ``` -0.45x + 9 = 0 ```

Subtracting 9 from both sides: ``` -0.45x = -9 ```

Dividing both sides by -0.45: ``` x = -9 / -0.45 ```

Calculating the value of "x": ``` x = 20 ```

Therefore, the total cargo transported is 20 tons.

Please note that the calculation assumes that the percentages given are based on the remaining cargo after each truck's transportation.