Jawabanmu

2014-02-12T20:31:31+07:00
Qlepas = Qterima
m1 . c . (t3 - t1) = m2 . c . (t2 - t3)
3    . (t3 - 20) = 2 . (60-t3)
3t3 - 60 = 120 - 2t3
5t3 = 180
t3 = 36 derajat celcius
1 5 1