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

What is 30% of 100?

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Result

30% of 100 = 30

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

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 (100) by the decimal form of the percentage (0.3):
100 × 0.3 = 30

This means that 30% or 0.3 of 100 is 30. In other words, if you take 30% of 100, you get 30.

When a $100 product has a 30% discount, you save $30 and pay $70.

If you want to leave a 30% tip on a $100 meal, you would leave $30 as the tip.

When 30% sales tax is added to a $100 purchase, $30 is added for tax, making the total $130.

If 30% of students in a class are boys and there are 100 students total, that means there are 30 boys.

If you invest $100 and earn 30% annual interest, you'll receive $30 in interest for the year.

If a student answers 30% of questions correctly on a 100-question test, they answered 30 questions correctly.

If 30% of your monthly revenue goes to operating expenses and you earn $100, you spend $30 on operations.

If a hospital reduces infections by 30% from 100 cases monthly, they now have only 70 cases per month.

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