Five fifteenths is 5/15. To get the percent of any fraction divide the top by the bottom. So 5 divided by 15 is 0.33333333........ It is a repeating decimal.
7 fifteenths = 7/15 = 0.466667
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0.2667
0.8
0.9333
Two fifths is six fifteenths. Eleven fifteenths minus six fifteenths is five fifteenths, which is also one third.
0.53333333333
1.266666667
0.4
0.46666 repeating
0.86666 repeating