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28-02-2017
Mathematics

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La proiectul iubim natura au participat baieti si fete din clasa a IV-a.Numarul baietilor este de trei ori mai mare decat al fetelor,iar diferenta este 90.Cati baieti au participat?Dar fete?

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Аноним Аноним

28-02-2017

L-------l fete
l-------l-------l-------l baieti
----------------
90 diferenta

3-1=2 segmente
90=2 segmente
90:2= 45 un segment SAU fete
45x3=135 baietii

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