well say you have 1/10. well you know that to get a percentage you always have a number over 100. so 1/10 is the same as 10 percent because you have to multiply 10 by 10 to get to one-hundred. so what you do to the denominator(bottom number) you do the same to the numerator(top number) ok say you have 5/20. well then you have to multiply 20 by 5 to get to 100. and then also 5 by 5 wich equals 25%. so 25/100 is the same as 25%
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When you have 60% in fractions it is 60/100, because percent is alwase out of 100.
If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.
The correct answer is 30.08 which can be found by setting up a proportion with 100 and the whole number 128 as the denominators in the fractions and a 23.5 above the 100 and an x on top of the 128. Cross multiply and solve for the unknown.
Number*percent in a decimal 200 * .42 = 84
8/10 80/100