Question

Зарплату в 12000 грн робітнику підвищили спочатку на 10%,а через рік ще на 20%. На скільки відсотків підвищилась зарплата робітника порівняно початковою.

Answer 1

Ответ:

32%

Пошаговое объяснение:

Зарплату підвищили на 10%, тобто на :

12000грн -100%

     х грн - 10%

х=12000*10:100=1200 грн.

Тобто зарплата стала 12000+1200=13200 грн

Потім її підвищили на 20%:

13200 - 100%

   х    - 20%

х=13200*20:100=2640 грн

Зарплата стала 13200+2640=15840 грн

Початкова зарплата

12000 грн - 100%

15840 грн - х%

х=15840*100:12000=132%

тобто зарплата збільшилася на 32%

Answer 2

Calculation of Salary Increase

To calculate the percentage increase in the worker's salary, we need to consider two consecutive increases: 10% initially and then an additional 20% after a year.

Let's assume the initial salary of the worker is 12,000 UAH.

Step 1: Calculate the first increase of 10%:

To find the increase, we can multiply the initial salary by 10% and add it to the initial salary.

10% of 12,000 UAH = 0.10 * 12,000 UAH = 1,200 UAH

New salary after the first increase = 12,000 UAH + 1,200 UAH = 13,200 UAH

Step 2: Calculate the second increase of 20%:

To find the increase, we can multiply the new salary after the first increase by 20% and add it to the new salary.

20% of 13,200 UAH = 0.20 * 13,200 UAH = 2,640 UAH

New salary after the second increase = 13,200 UAH + 2,640 UAH = 15,840 UAH

Step 3: Calculate the percentage increase:

To find the percentage increase, we can use the following formula:

Percentage increase = ((New salary - Initial salary) / Initial salary) * 100

Percentage increase = ((15,840 UAH - 12,000 UAH) / 12,000 UAH) * 100

Percentage increase = (3,840 UAH / 12,000 UAH) * 100

Percentage increase ≈ 32%

Therefore, the worker's salary increased by approximately 32% compared to the initial salary.

Please note that the above calculation is based on the assumption that the salary increases are cumulative. If the increases are applied separately to the initial salary, the percentage increase would be different.