you turn percents into mixed numbers by turning the percent into a fraction then a mixed number
A mixed fraction already is a number.
To turn a mixed number into a ratio, you must divide each number into a common denominator.
Whole numbers can't be a mixed number.
turn the mixed number into an improper fraction
You cannot. Mixed number and whole numbers form disjoint sets.
To subtract a mixed number by a mixed number you first need to turn the fractions into improper fractions then you just subtract them as you would with the normal fractions
225 is an integer and so there is no sensible way of representing it as a mixed number.
30/7 as a mixed number is 4 2/7.