percent changes from 15 to 13
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13% of 15 is: 1.95
13/15 = 13 ÷ 15 = 0.8667
First put them in numerical order,12, 13, 13, 15, 15, 18.since there is an even set of numbers the median is the mean of the two middle numbers12, 13, 13, 15, 15, 18.(13+15)/2=14
x/13 = 15 x = 15(13) x = 195
13 + 15 = 28