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It has something to do about proportion and fractions. But say I want to express in that notation the fact that some event happens with a probability 2/3. Does that write 2:3 or 2:1 or something else?
A:b is a ratio and is usually used to compare two quantities, while a/b is a fraction and represents a part of a whole.
To simplify a:b, you can divide both numbers by their greatest common factor (GCF). This will give you the simplest form of the ratio.
Yes, you can convert a:b into a decimal by dividing the first number by the second number. To convert it into a percentage, just multiply the decimal by 100.
Yes, a:b can be used to solve a variety of real-world problems such as finding the ratio of ingredients in a recipe or comparing prices of different items.
To solve proportions using a:b, you can set up a proportion equation with two ratios, cross-multiply, and then solve for the missing value. For example, if you have a ratio of 2:4 and want to find the missing value when the ratio is 6:12, you can set up the equation 2/4 = x/12 and solve for x by cross-multiplying.