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Anonymous
10*99/100 = 9.9
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9.9
90 + 10% = 99
Increase 90 by 10 percent, by multiplying 90 times 1.10 or it is 99.
99 over 100 as a percent = 99%
99/100
99 x 10 - 99 x 9 = 99(1 x 10 - 1 x 9) = 99(10 - 9) = 99(1) =99