Percentages practice problems - page 104 of 110
Number of problems found: 2186
- Fertilizer
Mr. Gherkin uses for fertilization 7% solution of fertilizer. 9 liters of it still left. How much water must be added to the solution to make only the 4% solution? - Typing course
Before taking a typing course, Peter could type 32 words per minute. By the course's end, he could type 65 words per minute. Find the percent increase. - Enrollment
The enrollment at a local college increased 8% from 9339 over last year. Find the increase in enrollment (x1) and the current enrollment (x2). - Machine
The price of the new machine is € 65000. The 12% of residual value is depreciated every year. What will the value of the machine be after 2 years? - Suit
The suit cost 124 euros. How much cost the pants if it is 30% cheaper than the jacket? - Gon functions
Decide which numbers (values of trigonometric functions) are positive or negative (or zero). Positive mark +1 and negative -1. - Inheritance
After death, the father († 62) remained the mother (his wife) and 3 children. Inheritance by law is that the first mother will automatically get half of the property and the other half inherited by heirs, the mother and her 3 children by the same share. C
- Efficiency
A certain device consumes 50 kW and delivers 17 kW. Find its efficiency. - 100 %
How much is 100% if 82 % is 77? - Percentages
Expressed as a percentage: - Bakery
How heavy must prepare bread at a bakery if a bread loses 18% of water during baking and after baking must have 1.7 kg? (Calculate to the nearest gram) - Railways
Railways climb 2.8 ‰. Calculate the height difference between two points on the railway distant 5997 meters. - Ray
Light ray loses 1/19 of brightness passing through a glass plate. What is the brightness of the ray after passing through 5 identical plates? - Paddlers
Students of canoeists traveled on a trip of three days 102 km. On the second day, they traveled 15% more than the first day and on the third day 9 km over the second day. How many kilometers are traveled each day? - Number
What number is 12 % smaller than the number 102?
- Prism
A right-angled prism, whose base is a right triangle with leg a = 3 cm and hypotenuse c = 6 cm, has the same volume as a cube with an edge length of 1 dm. a) Find the height of the prism b) Calculate the surface of the prism c) What percentage of the cube - Hop-garden
The length of the rectangular hop garden Mr. Smith increased by 25% and its width by 30%. What is the percentage change in the area of the hop garden? - Retail
At what price can the retail 1 kg goods be bought from wholesale if the weight lost in distribution is 4%, and retail still has a profit of 6.3%? Goods are sold at retail for 25 euro per kg. - Reference angle
Find the reference angle of each angle: - VAT lottery
Father earns 809 euro a month, mother 480 euro per month. Calculate what amount they paid as value-added tax (VAT) to the government if the VAT rate is 20%. Assume that the family will spend their entire monthly income.
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