t1=40c m1=200г t2=20c m2=100г Найдите температуру раствора

Q1=c*m1*(T1-T3)
Q2=c*m2*(T3-T2)
Q1=Q2
m1*(T1-T3)=m2*(T3-T2)
m1*T1-m1*T3=m2*T3-m2*T2
m1*T1+m2*T2=T3(m1+m2)
T3=(m1*T1+m2*T2)/(m1+m2)
T3=(0.2*40+0.1*20)/(0.2+0.1)=33.33 C