Question

Quanto é 45% de RS 8.000,00?

Answer 1

100%--------->8.000
 45%---------->x
100x=8000*45
100x=360000
x=360000/100
x= R$ 3.600,00

Answer 2

regra de tres
100%--------8.000
 45%----------x
100x=360.000
x=360.000/100
x=3.600