M(p1)=300г W=5% m(p2)=200г w2=10% w3-?

Question

M(p1)=300г
W=5%
m(p2)=200г
w2=10%
w3-?

Answer 1

W3=mв-ва1+mв-ва2/mp1+mp2
mв-ва=w*mp-pa
W3=15+20/300+200=0,07=7%