Question

1-Calcules as seguintes porcentagens: A)80% de 50 b) 70% de 30 c) 60% de 70 d) 30% de 60
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Answer 1

a)

80% de 50 = 80/100 ou 0,80 * 50 = 40 >>>>

b)

70% de 30 = 70/100 ou 0,70 * 30 = 21 >>>>>

c)

60% de 70 = 60/100 ou 0,60 * 70 = 42 >>>

d)

30% de 60 = 30/100 ou 0,30 * 60 = 18 >>>>

Answer 2

Explicação passo-a-passo:

.

$a) \dfrac{80}{100} \times 50$

$0.8 \times 50$

$40$

.

$b) \dfrac{70}{100} \times 30$

$0.7 \times 30$

$21$

.

$c) \dfrac{60}{100} \times 70$

$0.6 \times 70$

$42$

.

$d) \dfrac{30}{100} \times 60$

$0.3 \times 60$

$18$