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Doctorgrey
@Doctorgrey
November 2019
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Uma liga metálica tem 35% de cobre e o restante de zinco. Qual o peso da liga que se obtêm com 19,5 kg de zinco?
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Indalecio
Verified answer
100%-35%=65%
x 100
19,5 65
x*65=19,5*100
65x=19500
x=19500/65
x=30
Resposta: 30Kg
2 votes
Thanks 3
caio0202
Regra de 3 : 100% - 35% = 65% de zinco
Peso %
19,5 65
x 100
65x = 19,5 . 100
65x = 1.950
x = 1.950 / 65
x = 30
Resposta: 30 kg
1 votes
Thanks 2
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Verified answer
100%-35%=65%x 100
19,5 65
x*65=19,5*100
65x=19500
x=19500/65
x=30
Resposta: 30Kg
Peso %
19,5 65
x 100
65x = 19,5 . 100
65x = 1.950
x = 1.950 / 65
x = 30
Resposta: 30 kg