Ответ:
m1*T1+m2*T2 =(m1+m2)*T3
2*20+m2*100 = (2+m2)*50
40+100m2 =100 + 50m2
50m2=60
m2=60/50=1,2
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Ответ:
m1*T1+m2*T2 =(m1+m2)*T3
2*20+m2*100 = (2+m2)*50
40+100m2 =100 + 50m2
50m2=60
m2=60/50=1,2