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O cabana are 30 de patiri.In 3 camere sunt cate 8 paturi,iar in celelalte camere cate 3 paturi.Cate camere are cabana?

Răspuns :

5 camere. deoarece 3x8=24<br />30-24=6 paturi ramase<br />iar daca in celelalte sunt cate 3 paturi 6:3=2 camere<br />3+2=5 camere
3•8 =24 30-24= 6 6•3=18 24+18=42. R:42 camere are cabana