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faster writing and reading
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if 5117 students are 0.0202, then x students are 1. 5117 0.0202 so, x = 5117 * 1 / 0.0202 = 253316.83, getting the same result. but the good thing is, when you multiply by 1, this is always neutral, so we can eliminate this step too, just doing: x = 5117 / 0.0202 = 253316.83, and solving the whole exercise just with one division. so, our lesson to learn here is, if an exercise gives you a partial number (of students or whatever) and its proportion to the total number of them, asking you to calculate that total number, you only need to divide: partial number / proportion to total number 2) when you have reviewed this exerciseveral times and you feel more comfortable with percentage calculation, maybe you will be able to use the faster and more intuitive approach to get percentages of figures that i am going to present here too. think that, when they give you a number (5117) and a percentage to apply (0.0202), you can only make two logical operations: multiplying or dividing. which one should you choose?
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