Question

Dau coroană plss
cele 2 exercitii​

Answer 1

Răspuns:

2.

a)

ms=20g

md4g

C=md×100/ms=4×100/20=20%

b)

ms=600g

md=15g

C=?

C=15××100/600=calculeaza

c)

ms=400g

md=8g

C=?

C=8×100/400=calculeaza

d)

ms=2kg=2000g

md=40g

C=?

C=40×100/2000=calculeaza

3.

a) ms=250g

C=35%

md=?

md=C×ms/100=35×250/100=calculeaza

b) ms=50g

C=2,5%

md=?

md=50×2,5/100=calculeaza

c)ms=2k=2000g

C=10%

md=?

md=2000×10/100=calculeaza

d)

ms=0,8kg=800g

C=20%

md=?

md=20×800/100=calculeaza

Explicație: