7.02 is 39% of 18.
Sorry, but that answer is wrong! I was always taught to answer these kinds of questions this way:
Translate the English into the language of math. "Is" is the same as =. Change the percent into a fraction. "What number" gets replaced with a variable, the unknown that you solve the equation for.
39 = (18/100)x
Then just do the algebra and solve for x.
18x = 3900
x = 650/3 or 216 2/3
Just looking at the problem, you can tell that 18 percent is less than 1/5 of the number you are trying to find. If 39 is less than 1/5 of that number, it must be a lot bigger than 39. Like more than 5 times bigger!
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39 is 55/9% of 702. 18% of 702 is 126.36 .
% decrease = [(57-39)/57] x 100% = (18/57) x 100% = 31.58%
39% = 0.39 or 39/100
Fraction for 39 percent is 39/100
39 percent to decimal = 0.39 39% = 39%/100% = 0.39