5% of 90 is 4.5. To calculate this: 1) Convert 5% to decimal (5/100 = 0.05), 2) Multiply by 90 to get 4.5.

What is 5% of 90?

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Result

4.5

5% of 90 = 4.5

5\% \times 90 = 90 \times \frac{5}{100} = 4.5

5% means 5 parts out of 100. To convert a percentage to a decimal, we divide by 100: 5% = 0.05

We multiply our number (90) by the decimal form of the percentage (0.05):
90 × 0.05 = 4.5

This means that 5% or 0.05 of 90 is 4.5. In other words, if you take 5% of 90, you get 4.5.

When a $90 product has a 5% discount, you save $4.5 and pay $85.5.

If you want to leave a 5% tip on a $90 meal, you would leave $4.5 as the tip.

When 5% sales tax is added to a $90 purchase, $4.5 is added for tax, making the total $94.5.

If 5% of students in a class are boys and there are 90 students total, that means there are 5 boys.

If you invest $90 and earn 5% annual interest, you'll receive $4.5 in interest for the year.

If a student answers 5% of questions correctly on a 90-question test, they answered 5 questions correctly.

If 5% of your monthly revenue goes to operating expenses and you earn $90, you spend $4.5 on operations.

If a hospital reduces infections by 5% from 90 cases monthly, they now have only 86 cases per month.

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