Question

o valor de (20%) ² + (60%)² é:
a- 40%
b- 50%
c- 55%
d- 60%
e- 65%

Answer 1

(20%)² + (60%)²

(20/100)² + (60/100)²

(2/10)² + (6/10)²

4/100 + 36/100 = 40/100 ==> 40% ✓

Answer 2

Vamos lá :

(20%)² + (60%)²

= (20/100)² + (60/100)²

= (400/(10.000)) + (3600/(10.000))

= (400 + 3600)/(10.000)

= (4000)/(10.000)

= 40/100

= 40%

Espero ter ajudado !!!!