55 р - 100%
77 р - х%
55/77 = 100/х
х = (77*100)/55 = 140 %
140-100 = 40%
Ответ: на 40%
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55 р - 100%
77 р - х%
55/77 = 100/х
х = (77*100)/55 = 140 %
140-100 = 40%
Ответ: на 40%