30% of 30 is 9. To calculate this: 1) Convert 30% to decimal (30/100 = 0.3), 2) Multiply by 30 to get 9.

What is 30% of 30?

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Result

30% of 30 = 9

30\% \times 30 = 30 \times \frac{30}{100} = 9

30% means 30 parts out of 100. To convert a percentage to a decimal, we divide by 100: 30% = 0.3

We multiply our number (30) by the decimal form of the percentage (0.3):
30 × 0.3 = 9

This means that 30% or 0.3 of 30 is 9. In other words, if you take 30% of 30, you get 9.

When a $30 product has a 30% discount, you save $9 and pay $21.

If you want to leave a 30% tip on a $30 meal, you would leave $9 as the tip.

When 30% sales tax is added to a $30 purchase, $9 is added for tax, making the total $39.

If 30% of students in a class are boys and there are 30 students total, that means there are 9 boys.

If you invest $30 and earn 30% annual interest, you'll receive $9 in interest for the year.

If a student answers 30% of questions correctly on a 30-question test, they answered 9 questions correctly.

If 30% of your monthly revenue goes to operating expenses and you earn $30, you spend $9 on operations.

If a hospital reduces infections by 30% from 30 cases monthly, they now have only 21 cases per month.

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