15% равно 2 11/90 100% неизвестно
15% - 2 11/90
100% - x
x = 2 11/90 * 100 : 15 = 191*100/1350 = 14 4/27
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Ответ: 14 4/27
2 11/90*100%/15%=191/90*20/3 = 382/27 = 14 4/27