Percentage calculator

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What is % of ?
is what percent of ?
is % of what?
The fraction / is what percent?
% increase of is
% decrease of is
% is what fraction/number?
What is the percentage increase/decrease from to ?
Climb/descent of % is what angle in degrees?
Climb/descent of degrees is what percent?
If a goods sells for after a % markdown, what was its original price?

What is the percentage?

A percent is a ratio whose second term is 100. Percent means parts per hundred. The word comes from the Latin phrase per centum, which means per hundred. In mathematics, we use the symbol % for percent or the abbreviation pct.
For example, 12% (read as 'twelve percent') is equal to 12/100, or 3/25, or 0.12.
Percentages are used to express how large or small one quantity is relative to another quantity.

Percentage in word problems:

• Percent
  From 99 children who participated in the ski course were 23 excellent skiers, 13 good and 20 average and the rest were beginners. Calculate this data in percentages.
• Clock
  How many times a day do hands on a clock overlap?
• Simple interest
  Peter put into bank $x euros deposit. After $n years on account, overall was $y euro. What was the interest rate if the bank added simple interest?
• 100 %
  How much is 100% if 82 % is 77?

• Fertilizer
  Mr. Gherkin uses for fertilization 10% solution of fertilizer. 5 liters of it still left. How much water must be added to the solution to make only the 7% solution?
• Obtained 2530
  The weight of the veal obtained is 64% of the total weight of live calves. What was the weight of the live calves, from which 16,830 kg of veal were obtained?
• Connecting 2990
  We use 540 m of mesh, of which 20% are for connecting corners. How much mesh did we use to join the corners?
• Shots
  Determine the percentage rate of keeper interventions if 32 shots don't catch four shots.
• Three shapes
  1/5 of a circle is shaded. The area's ratio of a square and the sum of a| rectangle and the circle is 1:2. 60% of the square is shaded, and 1/3 of the rectangle is shaded. What is the ratio of the area of the circle to that of the rectangle?

• Peroxide
  How many ml should we pour 30% of peroxide (H2O2) into 100ml H2O to give a 20% solution?
• Prime number
  Jan wrote any number from 1 to 20. What is the probability that he wrote the prime number?
• Following 7774
  The store sells 3 types of cakes: poppy, cottage cheese, and jam. They all cost the same. As of yesterday, the following offer applies: If you buy any 8 of these cakes, you will pay for only 5. How much percent less will I pay now for 8 of these cakes?
• Pyramid-shaped 7820
  The pyramid-shaped tent has a square base with a side size of 2.2m and a height of 1.8m. How many square meters of tent canvas are needed to make it if we count an extra five percent for the foundation?
• Percentage 61594
  Calculate the percentage of the cube volume that represents the volume of the cylinder inscribed in the cube. The cylinder's bases are circles inscribed on two opposite walls of the cube with an edge a = 14 cm.

• Observer 64354
  At what angle of view does an object 70 m long appear to the observer, 50 m away from one end, and 80 m from the other end?

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