Percent means "divide by 100", "of" in Math means to "multiply", and "is" means "equal." Lets write what we know into an equation to make this easier.
36 = ?% x 80
We know that something x something equals a number, but we also know that the number divided by one something gives us the other something. Follow? If something % x 80 = 36, then 36 divided by 80 gives us the percent to fill in the question mark (when we multiply by 100). 36 divided by 80 = .45, or 45%
Check your work by finding 45% of 80. 80 x .45 = 36, so our answer is correct.
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125 - (36%) = 80
What you do is divide 80, or any number, by 100 then multiply by the percent you need, like 80, and there's your answer. Example (Your problem): 80/100=0.8 0.8x80=64 So your answer: 80% of 80 is 64
Solve this problem -x squared -40x- 80 =0
24 percent is another way of writing 0.24 Simply replace "of" with "times", and you get 0.24 times 80 Solve, and you get: 0.24 times 80 = 19.2
Well, isn't that a happy little math problem! To find 80 percent of 2500, you simply multiply 2500 by 0.8. So, 80 percent of 2500 is 2000. Just imagine all the beautiful things you could do with that number!