Question

Bunicul are mai multi iepurasi.Daca pune cate 4 in cusca,raman 12 iepurasi fara cusca.Daca pune cate 6 iepurasi in cusca,raman 3 custi goale.Cate custi si cati iepurasi sunt?
Dau coroana!!

Answer 1

Răspuns: 15 cuşti  si 72 iepurasi

Explicație pas cu pas:

4 × c + 12 → cate 4 iepurasi in cusca, ii raman 12

6 × ( c - 3 ) → cate 6 iepurasi in cusca, raman 3 custi libere

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6 × c - 18 = 4 × c + 12

6 × c - 4 × c = 12 + 18

2 × c = 30

c = 30 : 2       ⇒   c = 15 ( cuşti )

4 × 15 + 12 = 72 iepurasi

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6 × ( 15 - 3 ) = 6 × 12 = 72 iepurasi