Question

No3 Найдите число если 1) 25% составляет 45 2) 13% составляет 39 3) 15% составляет 12 Дескриптор 1) Находит число по его проценту помогите пожалуйста дам 100 балов срочно помогите​

Answer 1

Ответ:

1) 180.

2) 300.

3) 80.

Пошаговое объяснение:

1) 45 — 25%

45 : 25 = 1,8 — 1%

1,8 * 100 = 180 — 100%

2) 39 — 13%

39 : 13 = 3 — 1%

3*100 = 300 — 100%

3) 12 — 15%

12 : 15 = 0,8 — 1%

0,8 * 100 = 80 — 100%

Answer 2

180
300
80
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Answer 3

Finding the Number Based on Percentage

To find the number based on a given percentage, we can use the following formula:

Number = (Percentage / 100) * Total

Let's apply this formula to the given percentages and totals:

1) 25% of an unknown number is 45. 2) 13% of an unknown number is 39. 3) 15% of an unknown number is 12.

Calculating the Numbers

1) For the first scenario, where 25% of the number is 45: - Number = (25 / 100) * Total - 45 = (25 / 100) * Total - Total = 45 / (25 / 100) - Total = 45 / 0.25 - Total = 180

Therefore, the number is 180.

2) For the second scenario, where 13% of the number is 39: - Number = (13 / 100) * Total - 39 = (13 / 100) * Total - Total = 39 / (13 / 100) - Total = 39 / 0.13 - Total = 300

Therefore, the number is 300.

3) For the third scenario, where 15% of the number is 12: - Number = (15 / 100) * Total - 12 = (15 / 100) * Total - Total = 12 / (15 / 100) - Total = 12 / 0.15 - Total = 80

Therefore, the number is 80.

So, the numbers for the given percentages are 180, 300, and 80, respectively.