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Дано m. M1w1 + m2w2 = ( m1+m2+m3) w. M1=1000г m2=3000г w1=11% w2=15% w3=&. M1+w1+m2+w2= m1. W=m1-m2/m2.
M1w1 + m2w2 = ( m1+m2+m3) w. M1=1000г m2=3000г w1=11% w2=15% w3=&. M1+w1+m2+w2= m1. W=m1-m2/m2.

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