Percentages practice problems - page 2 of 99
Percentages are a way to express a number as a fraction of 100. They are often used to express a proportion or rate, such as a percentage of total sales or a percentage increase or decrease in a value. For example, if a product sells 25 out of 100 units, the percentage of units sold is 25%, which can also be written as 0.25 or 25/100.Percentage points, also known as percentage point change or "pp" for short, is the difference between two percentages. It is often used to express the change in a variable over time or between two groups. For example, if a company's profits increased from 10% to 20% over a year, the percentage point change would be 10 percentage points (20% - 10% = 10%).
Number of problems found: 1977
- Cesar
Cesar increased the amount of water he drinks each day from 64 ounces to 72 ounces. By what percentage did Cesar increase the amount of water he drinks each day? - Cheesecakes
In a survey, 50% of people preferred fruit cake, 15% preferred sponge cake, and the remainder preferred cheesecake. What percentage of people liked cheesecake the best? - Children
Of the estimated 2 billion children living in the developing world, approximately 400 million do not have access to safe drinking water. Approximately what percentage of children in developing countries do not have safe water to drink? - Defect rate
A manufacturing machine has a 3% defect rate. If 9 items are chosen randomly, what is the probability that at least one will have a defect? - Express 72
Express the percentage to a fraction. 15% - A mortgage
A mortgage company charges borrowers $3.50 plus 2% of the loan amount. What is the total charge to get a home loan of $190,000? - Convert 8
Convert 11/2 into a percent? - Compound interest
Joel borrowed $3208.5 on November 2, 2021, at 3.6% p.a. How many days would it take for him to repay the loan if he made a payment of $ 3,720.34? Round up to the nearest day. - Tavarius
Tavarius scored an 85% on his math exam. If there were 20 questions on the exam, how many did he get correct? - Nelson
Nelson has a weekly salary of $445.86 and is self-employed. Use 7.51% for not self-employed and 12.3% for self-employed for the Social Security Tax. How much Social Security should be withheld? - The sum 41
The sum of 640.00 was deposited in the first bank for five years, and the interest given was 160.00. Find the rate. - Full value
If 7 %=16000000, what will be 100%? - A retailer
A retailer buys an item for $2.16 and sells it for $2.70. What is the percent increase in price? - Exp decay
An element with a mass of 780 grams decays by 16.3% per minute. How much of the element is remaining after 16 minutes, to the nearest 10th of a gram? - First year
First-year students enrolled at FEI were determined to be 2,000. Fifty-five percent are electronics students. How many are IT students? (Present your solution plus answer) - Suppose 12
Suppose in a physics test involving 30 students, and four scored 75%, eight scored 60%, twelve scored 50%, and six scored 30%. Calculate the mean of the group and the standard deviation. - The loss
The cost is 80. They wanted to sell them for 100. In fact, a year later, they sold it for 60. What is the percentage of loss? - A tip
Determine a 20% tip for a dinner that costs $65.00. - The price 6
The price of petrol is set to increase by 5% next month. If the current fuel price is R9,00 per liter, what will the new petrol price be next month? - The balance 2
If your balance at the end of 4 years is 50000, at a 5% interest rate, What was your original investment?
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