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Directions: Study the given table carefully and answer the following question. All prices are per unit based. Total cost price = Cost price + Miscellaneous cost Percentage profit or loss is based on the total cost price. Item CP (Rs.) SP (Rs.) Misc.cost (Rs.) Gain/Loss (%) Gain (Rs.) Loss (Rs.) Pen 15 1 Pencil 1 0 Sharpener 9 1 Notebook 21 10 2.5 Eraser 5 17.14 1.5 Diary 75 5 20

If selling price of a pencil is 20% more than cost price of an eraser, then what is the ratio of cost price of a pencil to that of an eraser?