What is 40 percent of 225
The Correct Answer and Explanation is :
Forty percent of 225 is calculated by multiplying 225 by 0.4:
[
225 \times 0.4 = 90
]
So, 40 percent of 225 is 90.
Explanation
Understanding percentages is crucial in many fields, especially in areas like healthcare, finance, and education. Percentages represent a part of a whole, with “percent” meaning “per one hundred.” When we say “40 percent,” we mean 40 out of every 100 units, or 40% of something.
To calculate a percentage of a number, follow these steps:
- Convert the percentage to a decimal: To find 40 percent, you first convert 40% to a decimal by dividing by 100. So, 40% becomes 0.4.
- Multiply the decimal by the number: Now, take the number you want to find the percentage of—in this case, 225—and multiply it by 0.4.
This calculation gives:
[
225 \times 0.4 = 90
]
Thus, 40% of 225 is 90.
Why This is Useful
Knowing how to calculate percentages is helpful in everyday tasks, such as calculating discounts, taxes, or tips. In healthcare or nursing, for example, percentages are often used to calculate dosages based on a patient’s body weight or a desired concentration of a solution. This skill ensures accuracy, which is crucial when administering medications or adjusting treatment plans.