Question

Va rog e foarte urgent !!!doar punctele colorate

Answer 1

1.

ms1 = 150 g , c1 = 5%

md = msxc/100 = 150x5/100 = 7,5 g

ms2 = ms1 - 50 = 100 g

c2 = mdx100/ms2 = 7,5x100/100 = 7,5%

2.

ms1 = 200 g , c1 = 20%

md1 = ms1xc1/100 = 200x20/100 = 40 g

md.f = 40+10 = 50 g

ms.f = ms1+10 = 210 g

=> c2 = md.fx100/ms.f = 50x100/210 = 23,8%