Here we will convert the number 89.91 to a fraction.
89.91 is the same as 89.91/1, because 89.91 divided by 1 is 89.91.
Therefore, we can multiply both the numerator and denominator in 89.91/1 by 100 to get rid of the decimal point and make it into a fraction as follows:
89.91/1 x 100/100 = 8991/100
Then, we simplify the fraction if necessary and we have our answer:
89.91 = 89 91/100
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