Question

А) сколько процентов состовляет 0,2 от 0,8? б) сколько процентов состовляет число 2/3 от числа 5/6?помните пожалуйста! с решением, а не просто ответ​

Answer 1

Ответ:

$\frac{0.8}{0.2} = \frac{100}{x} \\ \\ \frac{ \frac{4}{5} }{ \frac{1}{5} } = \frac{100}{x} \\ \\ \frac{4}{1} = \frac{100}{x} \\ \\ 4x = 100 \times 1 \\ \\ x = \frac{100}{4} \\ \\ x = 25\%$

б)

$\frac{ \frac{5}{6} }{ \frac{2}{3} } = \frac{100}{x} \\ \\ \frac{5}{6} \times \frac{3}{2} = \frac{100}{x} \\ \\ \frac{5}{4} = \frac{100}{x} \\ \\ 5x = 400 \\ \\ x = \frac{400}{5} \\ \\ x = 80\%$

Answer 2

Calculation of 0.2% of 0.8

To calculate what percentage 0.2 is of 0.8, we can use the formula:

Percentage = (Part / Whole) * 100

In this case, the part is 0.2 and the whole is 0.8. Plugging these values into the formula, we get:

Percentage = (0.2 / 0.8) * 100

Simplifying the equation, we have:

Percentage = 0.25 * 100

Calculating the result, we find that 0.2 is 25% of 0.8.

Therefore, 0.2 is 25% of 0.8.

Calculation of the percentage of 2/3 of 5/6

To calculate the percentage that 2/3 represents of 5/6, we can use the formula mentioned earlier:

Percentage = (Part / Whole) * 100

In this case, the part is 2/3 and the whole is 5/6. Plugging these values into the formula, we get:

Percentage = (2/3 / 5/6) * 100

To simplify the equation, we can multiply the numerator by the reciprocal of the denominator:

Percentage = (2/3 * 6/5) * 100

Simplifying further, we have:

Percentage = (12/15) * 100

Calculating the result, we find that 2/3 is approximately 80% of 5/6.

Therefore, 2/3 is approximately 80% of 5/6.