Mathematics, 07.12.2020 14:50 genyjoannerubiera

5. If 4 books and 5 pencils cost 56KM, 5 books and 4 pencils cost 79 KM, then 1 book and 1 pencil cost ...
A) 13 KM B) 14 KM C) 15 KM D) 16 KM E) 17 KM

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5. If 4 books and 5 pencils cost 56KM, 5 books and 4 pencils cost 79 KM, then 1 book and 1 pencil c...