cm1Δt1=cm2Δt2 , где Δt1=t-20, Δt2=50-t
m1(t-20)=m2(50-t)
m1t-20m1=50m2-m2t
m1t+m2t=50m2+20m1
t=(50m2+20m1)/(m1+m2)
t=(50*0,05+20*0,15)/0,2
t=(2,5+3)/0,2
t=5,5/0,2=27,5
cm1Δt1=cm2Δt2 , где Δt1=t-20, Δt2=50-t
m1(t-20)=m2(50-t)
m1t-20m1=50m2-m2t
m1t+m2t=50m2+20m1
t=(50m2+20m1)/(m1+m2)
t=(50*0,05+20*0,15)/0,2
t=(2,5+3)/0,2
t=5,5/0,2=27,5