Răspuns :
c=md*100/ms
ms=mapa+md
ms=600+md
40=md*100/600+md
40md+24000=100md
24000=60md
md=400g
ms=md+mapa=400+600=1000g
ms=mapa+md
ms=600+md
40=md*100/600+md
40md+24000=100md
24000=60md
md=400g
ms=md+mapa=400+600=1000g