Percentages practice problems - page 13 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: 1962
- IQ scores
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What percentage of the population scores higher than 125 on an IQ test? - 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? - 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? - Pupils
There are 40 pupils in a class. 30% of them are boys. How many pupils in the class are girls? - Discrete and continuous
2,3,4,4,5,5,5,6,6,7 Assume the scores are measurements of a Discrete variable and find the median. Assume the scores are measurements of a continuous variable and find the median by locating the precise midpoint of the distribution. - Cost and profit
Find the cost of goods that sold for P800.00 and which profit of 25% was made on cost. - Making profit
If I make a profit of 25% on selling a bottle of drink for 85, how much did I buy the drink? - Make loss
By selling an item 750, a trader made a 25 percent loss. How much loss did the trader make? - Plants
The number of germinated plants increased by 50% to 300 from morning to evening. How many plants germinated in the morning? - Decimal to percentages
A) What is 1.18 as a percent? B) What is 0.38 in percent notation? C) Write 65% as a fraction. Simplify. - Forest land
The land area of 320 hectares has 30% wood. How many hectares of land are not afforested? - The grocery store
The grocery store earned € 15450 in the first week. In the second € 18630. What percentage did sales increase in the second week compared to the first week? - Cake ingredients
Does the yeast cake contain milk, yeast, sugar, and flour in a ratio of 20:4:1:15. What percentage of flour is in yeast? - Sales off
After discounting 40%, the goods cost 15 €. How much did the cost of the goods cost before the discount? - 15 teachers
Fifteen teachers teach for a combined amount of 128 days over 64 days. What is this expressed as a percentage? - Test points
If you earned 80% of the possible 40 points, how many points did you miss to get 100%? - Classroom
There are eighty more girls in the class than boys. Boys are 40 percent and girls are 60 percent. How many are boys and how many girls? - Shooter
The probability that a good shooter hits the center of the target circle No. I is 0.1. The probability that the target hit the inner circle II is 0.58. What is the probability that it hits the target circle I or II? - Cone in cylinder
The cylinder is an inscribed cone. Find the ratio of the volume of the cone and cylinder. Please write the ratio as a decimal number and as a percentage.
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