Jawabanmu

2014-06-12T14:42:36+07:00
Q=Q1+Q2+Q3
=mxcxdeltaT+mxL+mxcxdeltaT
=1x500x25+1x80.000+1x1.000x50
=12.500+80.000+50.000
=142.500 kal.