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Do 3 over 5 and 12 over 20 from a proportion?
3/5 is the same as 12/20 because they are equivalent fractions.
How do you find a proportion?
Well, it really is quite simple. The definition of proportion is finding two ratios that are equal. So for example, if the ratio of dogs to cats was 4:5 and there were 20 animals in total, and you needed to figure out how many dogs there are, then you would first have to figure out if it was a part to part or a part to whole. This is a part to part. Then you would write out your proportion- which in this case would be 4 = x For every 5 cats, there are 4 dogs, so you would find your answer. --- --- 5 20
Which of the following is not a proportion?
5/3
How can you tell if a proportion is true?
If you cross-multiply and you obtain an equality, then the proportion is true. Example: 2/3 = 20/30 ? cross-multiply; 2 x 30 = 3 x 20 ? 60 = 60 Since we have an equality, the proportion is true.
5 is 20 percent of what number?
To find the number that 5 is 20% of, you can set up a proportion: 5 is to x as 20 is to 100. This can be written as 5/x = 20/100. Solving for x, we get x = (5 * 100) / 20 = 25. Therefore, 5 is 20% of 25.
