Question

Ce suma depusă cu 4% dobânda simpla aduce un venit anual de: a) 150 u.m b) 420u.m c)50 u.m

Answer 1

 a).      4%   ...    150 u.m.
        100%  ...       x
        ----------------------------
             x = 150*100:4 =3750 u.m.

b).    4%    ...   420 u.m.
      100%  ...      x
      ------------------------------
             x = 420*100:4 = 10500 u.m.

c).     4%   ...   50 u.m.
      100%  ...     x
      ----------------------------
            x = 50*100:4 = 1250 u.m.

Answer 2

x*4/100=150
x= 150:(4/100)=150*100/4=75*50=3750u.m.


y*4/100=420
y=420*100/4= 420*25=10500 u.m.


z*4/100=50
z=50*100/4=50*25=1250u.m.