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  【ThenumberofhoursJohnspendsonstudyingisnormallythreetimesthatofSimon.Thisweek,eachofthemspends6hoursmoreonstuding.Asaresult,Johnspends12hoursmorethanSimon.Howmanydoesa.Johnnormallyspendonsthdyinginaweek?b.Simon】

  ThenumberofhoursJohnspendsonstudyingisnormallythreetimesthatofSimon.Thisweek,eachofthemspends6hoursmoreonstuding.Asaresult,Johnspends12hoursmorethanSimon.Howmanydoes

  a.Johnnormallyspendonsthdyinginaweek?

  b.Simonnormallyspendonstudinginaweek?

1回答
2020-05-31 13:41
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韩建科

  为了叙述方便,我用J代表John,S代表Simon

  normally:J=3S

  thisweek:J+6-(S+6)=12

  所以J-S=12

  2S=12

  S=6

  即J=3*6=18

2020-05-31 13:45:28

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