
Regra de Três: Direta e Inversa
Mathematics
8th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 4 lápis custam R$ 8,00, quanto custarão 10 lápis, considerando o preço proporcional?
R$ 16,00
R$ 20,00
R$ 18,00
R$ 22,00
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em uma fábrica, 6 máquinas produzem 300 peças em 5 horas. Quantas peças 4 máquinas produzirão no mesmo tempo?
200
250
180
220
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 3 pessoas levam 12 dias para pintar uma casa, quantos dias levarão 6 pessoas para pintar a mesma casa, trabalhando no mesmo ritmo?
6
8
4
9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um carro percorre 150 km com 10 litros de combustível. Quantos litros serão necessários para percorrer 375 km?
20
25
30
35
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 8 operários constroem um muro em 15 dias, em quantos dias 12 operários construirão o mesmo muro, trabalhando no mesmo ritmo?
10
12
8
14
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para encher um tanque, são necessários 4 canos funcionando juntos durante 6 horas. Se apenas 2 canos forem usados, quanto tempo será necessário para encher o mesmo tanque?
8 horas
10 horas
12 horas
14 horas
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 5 metros de tecido custam R$ 60,00, quanto custarão 8 metros do mesmo tecido?
R$ 80,00
R$ 96,00
R$ 100,00
R$ 120,00
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