if the cost of 30 pens is rs90.The cost of 4 pen
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Cost of 30 pens = ₹90
Cost of 1 pen = 90/30
= ₹3
Cost of 4 pens = 4 x 3
= ₹12
Cost of 1 pen = 90/30
= ₹3
Cost of 4 pens = 4 x 3
= ₹12
Answered by
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Answer: Cost of 30 pens = ₹90. Cost of 1 pen = 90/30 = ₹3. Cost of 4 pens = 4 x 3 = ₹12.
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