Question

Асем задумала 3 числа. первое число равно а. второе число составляет 40% первого, а третье число 175% второго. Чему равно среднее арифметическое чисел, задуманных Асем

Answer 1

І число - а
ІІ число - 0,4а
ІІІ число - 1,75*(0,4а)=0,7а
среднее арифметическое = (а+0,4а + 0,7а) : 3= 2,1 а:3= 0,7а
Ответ: 0,7а

Answer 2

Calculating the Average of the Numbers

To calculate the average of the numbers, we'll first determine the values of the numbers based on the given conditions and then find their arithmetic mean.

1. Determining the Values of the Numbers: - The first number is denoted as a. - The second number is 40% of the first number. - The third number is 175% of the second number.

2. Calculating the Values: - Let's denote the first number as a. - The second number is 40% of the first number, which can be expressed as 0.40a. - The third number is 175% of the second number, which can be expressed as 1.75 * 0.40a.

3. Finding the Average: - The average of the three numbers can be calculated by adding them together and then dividing by 3.

4. Solution: - The average of the three numbers is given by: \[ \frac{a + 0.40a + 1.75 * 0.40a}{3} \]

- Simplifying the expression: \[ \frac{a + 0.40a + 1.75 * 0.40a}{3} = \frac{a + 0.40a + 0.70a}{3} = \frac{2.10a}{3} = 0.70a \]

- Therefore, the average of the three numbers is 0.70a.

Based on the given conditions, the average of the numbers, as calculated, is 0.70a.