Percentages practice problems
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: 2275
- The Population 5
The Population of a town is 320000. If the annual birth rate is 9.2% and annual death rate is 1.7% . Calculate the Population of town after 2 years. - Ten percent
Find 10% of $4. Explain - Simple interest pa If a sum of money doubles in 8 years at simple interest, in how many years will it become 3 times the original amount?
- Reading newspaper
40% of people read newspaper X, 50% read newspaper Y, and 10% read both newspapers. What percentage of people read neither newspaper? - Inflation again
If the price of a commodity increases by 85%, by what percentage should consumption be reduced so that spending increases by only 48%? - 20% percentage If 20% of A = 50% of B, what percentage of A is B?
- According 10
According to the Board of Math Examiners, approximately 62% of people taking the Math Exam pass the exam. If 18 people who have taken the Math Exam are randomly selected, what is the probability that at least 76% have passed? Round your answer to 4 decima - Stefan
Stefan sells Jin a bicycle for $147 and a helmet for $18. The total cost to Jin is 150% of what Stefan originally spent to buy the bike and helmet. How much did Stefan spend originally? How much profit did he make by selling the bicycle and helmet to Jin? - Bags of sugar
After I had used 1/5 of a bag of sugar and then used 1/4 of what was left, I had 60 g of sugar remaining. How much did I start with? - Jerseys
The football team has a total of 20 jerseys. There are 4 medium-sized jerseys. What percentage of the jerseys are medium-sized? - Cycloshop On increasing the price of a bicycle by 14%, it becomes Rs 1,425. What was its original price?
- Three in a ratio
If A is 40% more than B, and B is 20% less than C, find the ratio A:C. - School - boys:girls
In a school, 10% of the boys is equal to 1/4 of the number of girls, and 10% of the number of girls is equal to 1/25 of the boys. Find the ratio of the number of boys to girls. - The profit 6 A man sells an article at a profit of 20%. If he had bought it at 20% less and sold it for $5 less, he would have gained 25%. Find the cost price of the article.
- A pie 16 A pie is divided among 100 guests. Guest 1 gets 1%, guest 2 gets 2% of what is left, and so on. Who gets the largest piece of pie?
- A watch
If a watch is sold for $60, there is a loss of 15%. At what price must the watch be sold to make a profit of 2%? - Two types of ore
A total of 42 tonnes of two types of ore is to be fed into a smelter. The first type contains 6% copper and the other contains 2.5% copper. Find the necessary amounts of each ore to produce 2 tonnes of copper. - Cu ore An ore contains 5% copper. How much ore is required to obtain 400 grams of copper?
- Salary up and down
After reducing a man's salary by 50%, it is then increased by 50%. Find the net gain or loss percentage. - Subtracting 7 Subtracting 50 from 50% of a number gives 50. Find the number.
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