Question

Am nevoie de aceste probleme razolvate URGENT! Dau coroana:)))

Answer 1

1 ms1=104 g

c1=40%

mapa=40g

c2=?

md1=c1xms1/100=40x104/100=41,4g

md2=md1+mapa=40+41,4=81,4g

ms2=ms1+mapa=104+40=144g

c2=md2/ms2x100=41,4x100/144=28,75%

2 ms1=200g

c1=2%

c2=10%

mapa=?

md1=c1xms1/100=2x200/100=4g

md1=md2=4g  

ms2=ms1+mapa=>200+x

c2=md2x100/ms2=>10=400/200+x=>2000+10x=400=>10x=1600=>x=160

=>mapa=160g