180mere.......70banane.......710lei
60mere.........17banane ......205lei ×3si obt
180mere .......70banane.....710lei
180mere......51banane....615lei
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19banane...95lei
1kg banane ?95÷19=4lei
180mere? 710-4×70=430
1kg mere ?430÷180=2 rest 70