Requisites
1.10 pencils and two pens cost 48 lei and 8 pencils and 2 pens cost 46 lei. How much cost 1 pencil and 1 pen?
2. 5 pens and 11 pencils cost106 lei and 4 pens and 11 pencils cost 86 lei. How much cost 1 pencil and 1 pen?
3. If 5 markers and 10 pencils cost 50 lei and 7 markers and 3 pencils cost 37 lei. How much cost 1 marker and 1 pencil?
4.120 pencils and 100 notebooks cost 840 lei, 150 pencils and 300 notebooks cost 210 lei. How much cost 7 pencils and 7 notebooks?
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