The invested variable capital.

14+10*/, =24*/j 8 196 76 20+2x28 D 60+ 60=120 16+8=24 8 192 72 3X24 E 60+ 60=120 12+18=30 44/s 144 24 24 C 60+ 60=120 12+12=24 7 V. 180 60 2x30.