Răspunsuri

2014-09-18T20:26:16+03:00
Md1 = 300 * 10 / 100 = 30 g
md2 = 200 * 40 / 100 = 80 g
md final = 30 + 80 = 110 g
ms final = 300 + 200 = 500 g 
c final = 110/500 * 100 = 22%