# Percentages + direct relationship - examples

1. Bonus
Gross wage was 527 EUR including 16% bonus. How many EUR were bonuses?
2. Server
Calculate how many average minutes a year is the web server is unavailable, the availability is 99.99%.
3. Blood
In human body the blood is about 7.2% body weight. How many kilograms of blood is in the human body with weight 93 kg?
4. Expansion
If one side of the rectangle is larger 4-times and second 2-times, what percentage increases the area of rectangle?
5. TV fail
The TV has after 10,000 hours average 25 failures. Determine the probability of TV failure after 200 hours of operation.
6. Negative percentage
In 2004, the company had a loss of 40900 Euros. Two years later he was already in profit 48900 Eur. Calculate what percentage of the company increased profits in this two years.
7. Saving
Allen save € 2860 to buy a car. Yet it lacks save 55% of the car price. How much is the car?
8. Acid
The barrel is 199 litres of 38% acid. How many percent acid occurs when 61 litres revoke and replace it with the same amount of water?
9. Accidents
The count of accidents in 1995 caused 8780 women which is 8.4%. How many men caused the accidents?
10. Election mathematics
In elections, 12 political parties received this shares of voters: party A 56.2 %party B 8.5 %party C 8.2 %party D 6.2 %party E 6.1 %party F 5.5 %party G 3.2 %party H 2.1 %party I 2 %party J 1 %party K 1 % Calculate what the shares acquired in the parlia
11. Potatoes
Potatoes contain 78.6% starch. How many potatoes need to obtain 27 kg of starch?
12. Sales vs profit
Apple sells 22 percent less computes than the Acer but the profit from their sales is 2.2 times higher than Acer. How many times are Apple computer more expensive than Acer?
13. Fixed expenses 2013
Since 2013, the Slovak government plans to tax more small one person businesses. Instead of fixed expences 40% will be fixed expences 40% of gross income up to 420 Eur. Calculate what percentage of fixed expences will in 2013 pays from gross income 1569 E
14. Square
If we increase side of the square, increase its area of 63%. What is the percentage we increase side of the square?
15. Simple interest 2
Find the simple interest if 13905 USD at 4.5% for 6 months.
16. Simple interest 4
Find the simple interest if 5243 USD at 4.3% for 261 days. Assume a 361-day year.
17. Product V2
The price of product was increased by 12%. Price increased by 273. How much money it would cost this product, if it was on the contrary by 19% discounted.
18. Nectar
Nectar collected by bees contains 70% water. From the nectar of the some process produces honey which contains 19% water. How many kg of nectar bees need to collect to make 1 kg of honey?
19. Sisters
Sisters Zuzka Lenka and Vierka has save for a new bike. Zuzka save € 90, Lenka save € 90 and Vierka save € 82. Missing 30% gave them their mother. What is the price of the bike?
20. Copy typist
Typist for 12 hours rewritten 15% of the manuscript. After how many hours he will done 35% of the manuscript?

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