Question

1) Calcular a porcentagem de:
a) 35 % de 90
b) 25% de 80.

Answer 1

100___x

90___35

100.x=35.90

100x=3150

x=3150/100

x=31,5

100___x

80___35

100.x=90.25

100x=2250

x=2250/100

x=22,5