Question

In 1200g de solutie se afla 50 g de sare.cte g de sare se gaseste in 1,5 kg de solutie ,de aceiasi conectractie?

Answer 1

1200g......50gsare
1,5g........x
   
  x=1,5·50/1200
x=1200/75
x=16 g

Answer 2

Regula de 3 simplă.1200g⇒50g.
                           ≈1500g⇒$\frac{1200x50}{1500}$
 =$\frac{12x50}{15}$ = 40 g.
R:40g