(.75)*80=60 80-60= 20
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93.75%
To find the number, you can set up a proportion using the formula: part/whole = percent/100. In this case, you have 60 as 80% of the unknown number, so the proportion would be 60/x = 80/100. Cross multiply to solve for x: 80x = 6000. Divide both sides by 80 to find x, which equals 75. Therefore, 60 is 80% of 75.
% change = (final # - original #)/original# * 100%(140-80)/80 * 100% = 75% increase
Well, isn't that a happy little math problem we have here? To find the whole number, we can set up a simple equation: 60 equals 75 percent of the unknown number. By dividing 60 by 0.75 (which is 75 percent as a decimal), we find that the number is 80.
You take the .8 and multiply it by 100 because a percent of something is one hundredths of 1. For example, 75 cents is 75 one hundredths of a dollar. 75 cents is written as .75 in decimal form. .75 (75 cents) is 75% of 1 dollar. To change 75 cents or .75 to a percent, you just multiply it by 100 which .75 times 100 is 75. So, to find out what .8 is as a percent you just multiply it by 100 which is 80.