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cost of 15 pencils is equal to the cost of 5 pens if cost of one pen is Rs30 find the cost of 7 pencils and four pen. |
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Answer» 15 Pencils = 5 Pens 3 Pencils = 1 Pen One pen is of 30 so 1 Pencil is of 30/3 = 10 Cost of 7 Pencil and one Pen = 7(10) + 30 = 100 |
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