Răspunsuri

2014-11-13T20:08:55+02:00
C=15%
md = 75 g
ms =?
c=md*100/(md+m apa)
15= 75 *100 / 75 + m apa
15 ( 75+ m apa) = 75*100
75 + m apa = 75*100/15
75 + m apa =25*20
m apa = 500 - 75
m apa = 425
ms = m apa + md
ms =425+ 75 = 500 g