Question

resolva as porcentagens 40%de90borrachas
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Answer 1

Resposta:

36 borrachas

Explicação passo-a-passo:

regra de três simples

x⇔ 40 %

90 borrachas ⇔ 100 %

x = 40.90/100

x = 36

Answer 2

90.100

x 40

100x=3600

x=3600/100

x =36