m(р) = 80 + 30 = 110 г
w = m(в)/m(р) · 100%
w = 30/110 · 100% = 27,27%
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m(р) = 80 + 30 = 110 г
w = m(в)/m(р) · 100%
w = 30/110 · 100% = 27,27%