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Problemas de equações do 1º
grau.
Vamos nos divertir utilizando
equações.
Você aceita o desafio???
400 selos deveriam ser repartidos
igualmente entre algumas crianças
filatelistas. No entanto, três delas
deixaram de comparecer e o total de
selos a ser distribuído foi alterado para
352.
a) Qual era o número inicial de crianças?
b) Você sabe o que significa “filatelista”?
Numa sexta feira, o total de R$ 180,00 de gorjeta foi
repartido igualmente para um certo número de
frentistas. No dia seguinte, o valor total das gorjetas
alcançou R$ 156,00; no entanto, dois frentistas
deixaram de comparecer ao serviço. Considerando a
sexta feira e o sábado, a quantia que coube a cada
frentista foi exatamente a mesma. Quantos frentistas
tem o posto de gasolina?
(a) 18
(b) 10
(c ) 20
(d) 15
Uma torneira leva 20 minutos pra encher um
tanque e uma outra torneira consegue enchê-lo
em 30 minutos. Quanto tempo será necessário
para encher o tanque se ambas as torneiras
forem deixadas abertas?
(a) 10 minutos
(b) 13 minutos
(c) 12 minutos
(d) 23 minutos

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Equações do 1o grau - selos e gorjetas

  • 1. Problemas de equações do 1º grau. Vamos nos divertir utilizando equações. Você aceita o desafio???
  • 2. 400 selos deveriam ser repartidos igualmente entre algumas crianças filatelistas. No entanto, três delas deixaram de comparecer e o total de selos a ser distribuído foi alterado para 352. a) Qual era o número inicial de crianças? b) Você sabe o que significa “filatelista”?
  • 3. Numa sexta feira, o total de R$ 180,00 de gorjeta foi repartido igualmente para um certo número de frentistas. No dia seguinte, o valor total das gorjetas alcançou R$ 156,00; no entanto, dois frentistas deixaram de comparecer ao serviço. Considerando a sexta feira e o sábado, a quantia que coube a cada frentista foi exatamente a mesma. Quantos frentistas tem o posto de gasolina? (a) 18 (b) 10 (c ) 20 (d) 15
  • 4. Uma torneira leva 20 minutos pra encher um tanque e uma outra torneira consegue enchê-lo em 30 minutos. Quanto tempo será necessário para encher o tanque se ambas as torneiras forem deixadas abertas? (a) 10 minutos (b) 13 minutos (c) 12 minutos (d) 23 minutos