40/100 = 2/5
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4/5
Well, isn't that a happy little question! If we think about it, 20 cents is a fifth of a dollar, because there are 100 cents in a dollar. So, 20 cents is the same as 1/5 of a dollar. Just imagine that dollar being divided into five equal parts, and one of those parts is 20 cents!
57 cents is 57/100 of one dollar.
Well, isn't that just a happy little question! If we have one dollar, which is the same as 100 cents, and we want to find out what fraction 15 cents is, we simply divide 15 by 100. So, 15 cents is 15/100 or 3/20 of a dollar. Just remember, there are no mistakes, only happy accidents in math!
1/20 of a dollar is a nickel. It's 5 cents.