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Questions and Answers
What is the process for finding n% of x?
If a company had a 137% increase in production, how many products were produced in the second year?
What is 112% of $18?
What happens to a number when the percentage used is greater than 100?
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What is the result of dividing 20 by 100 and then multiplying by 18?
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What is the algorithm for finding the percentage of a number?
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What does 'percent' mean?
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If a person is getting a 25% raise on a salary of $40,000, how much more will they be making annually?
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If a product is discounted by 30% and now costs $70, what was its original price?
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If 15% of a number is 45, what is the number?
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Study Notes
Finding a Percentage of a Number
- To find n% of x, multiply x by (n/100)
Percent Increase
- If a company has a 137% increase in production, it means they produced 137% more products in the second year compared to the first year
- To find the number of products produced in the second year, multiply the original number by (1 + 137/100)
Calculating Percentages
- 112% of $18 is calculated by multiplying $18 by (112/100)
- When the percentage is greater than 100, the result is greater than the original number
Dividing by 100 and Multiplying
- Dividing 20 by 100 gives 0.2, and multiplying it by 18 gives 3.6
Algorithm for Finding a Percentage
- The algorithm for finding the percentage of a number is: (part/whole) x 100
Meaning of 'Percent'
- 'Percent' means 'per hundred', and is a way to express a value as a fraction of 100
Salary Raise
- If a person gets a 25% raise on a $40,000 salary, they will get an increase of $10,000 (25% of $40,000) and their new salary will be $50,000
Discounted Product
- If a product is discounted by 30% and now costs $70, its original price was $100 (since $70 is 70% of $100)
Finding the Original Number
- If 15% of a number is 45, the number can be found by dividing 45 by 0.15 (15% as a decimal)
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Description
Test your knowledge on finding the percentage of a number with this interactive quiz. Learn how to calculate percentages and apply them in real-life scenarios. Master the skill of determining percentages effortlessly.
