Question

2°Determine o principal em cada caso:

a)P=130
I=65%
C=?

b)P=18
I=3%
C=?

c)P=1.500
I=25%
C=?

Answer 1

130 ×65:
------
100
130÷100:1,3
1,3×65:
C:84,5

18 ×3:
-----
100
18÷100:0,18
0,18×3:
C:0,54

1500 × 25:
--------
100
1.500÷100:15
15×25:
C:375