90% of 80 is 72. To calculate this: 1) Convert 90% to decimal (90/100 = 0.9), 2) Multiply by 80 to get 72.

What is 90% of 80?

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Result

90% of 80 = 72

90\% \times 80 = 80 \times \frac{90}{100} = 72

90% means 90 parts out of 100. To convert a percentage to a decimal, we divide by 100: 90% = 0.9

We multiply our number (80) by the decimal form of the percentage (0.9):
80 × 0.9 = 72

This means that 90% or 0.9 of 80 is 72. In other words, if you take 90% of 80, you get 72.

When a $80 product has a 90% discount, you save $72 and pay $8.

If you want to leave a 90% tip on a $80 meal, you would leave $72 as the tip.

When 90% sales tax is added to a $80 purchase, $72 is added for tax, making the total $152.

If 90% of students in a class are boys and there are 80 students total, that means there are 72 boys.

If you invest $80 and earn 90% annual interest, you'll receive $72 in interest for the year.

If a student answers 90% of questions correctly on a 80-question test, they answered 72 questions correctly.

If 90% of your monthly revenue goes to operating expenses and you earn $80, you spend $72 on operations.

If a hospital reduces infections by 90% from 80 cases monthly, they now have only 8 cases per month.

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