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: 2186
- Three in a ratio
If A is 40% more than B, B is 20% less than C then, find the ratio A : C. - School - boys:girls
In a school 10% of boy is equal to the 1/4 of number of girls and 10% of the number of girls is equal to the 1/25 of boys. Find the ratio between the number of boys and girls. - The profit 6
A man sells an article at a profit of 20%. If he had bought it at 20% less and sold for $5 less, he would have gained 25%. Find the cost price of the article. - A pie 16
A pie is divided into 100 guests. Guest 1 gets 1%, guest 2 gets 2% of what left,... and so on. Who gets the largest piece of pie? - A watch
If a watch is sold at 60 USD, there is a loss of 15%, for a profit of 2%, the watch is to be sold at how many USD? - Two types of ore
A total of 42 tons of two types of ore is to be added 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 tons 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 the salary of a man by 50%, it is increased by 50%. Find the loss or gain percent. - Subtracting 7 Subtracting 50 from 50% of a number we get 50 as remainder. Find the number.
- A man 24
A man distributed 25300 EUR among his 3 sons A, B, C in such a way that the amounts of their parts at 10% simple interest in 2 years, 3 years, 4 years will be equal. A's share? - 128 USD 128 USD is increased by 20 percentage. Determine the new amount.
- Doubling - simple interest A sum becomes its double in 10 years. Find the annual rate of simple interest
- Triple the sum At what rate a sum triples in 5 years at simple interest?
- Somebody Somebody spend 5% of his wages on paying school fees. That is 800 shillings . How much does he earn?
- By selling 2 By selling 100 pens, a shopkeeper gains the selling price of 20 pens. Find his gain percent.
- Percents and ratio When 20% of a number is added to another number, the number increases by 50%. What is the ratio of the two numbers?
- Inverse percentages
If a is 40 percent of b then, what percent is b of a? - Dual profit
A merchant has 1000 kg of sugar, part of which he sells at 8% profit and the rest 18%. He gains 14% on the whole. Find the quantity of 8% profit. - An article 2
An article is bought for 124 USD. What should be the marked up selling price so that there is a profit of 10% even after allowing a discount of 12%? - Dilution
How many liters of water will have to be added to 1125 liters of the 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content?
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