1.
md = 14g, m.apa = 66g
stim ca ms = md+m.apa = 14+66 = 80g
stim ca c% = mdx100/ms
= 14x100/80 = 17,5%
2.
md = 30g, c% = 15%
din c% => ms = mdx100/c%
= 30x100/15 = 200 g sol.
3.
ms1 = 400g, c1% = 30%
ms2 = 350g, c2% = 15%
"sa creasca cu 5 unitati".... nu are ce cauta aici......!!!!!!!
din c% =>
md1 = ms1xc1%/100
= 400x30/100 = 120 g
md2 = ms2xc2%/100
= 350x15/100 = 52,5 g
=> md.final = md1+md2 = 120+52,5 = 172,5 g
=> ms.final = ms1+ms2 = 400+350 = 750 g
=> c%.final = md.finalx100/ms.final
= 172,5x100/750 = 23%
