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Cost of a Pen is Rs.5 Madan has some money with him. He pays all of that money to buy those pens. Write the number of pens purchased in terms of the money he had.

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Cost of a pen = Rs. 5 

Let madan has Rs. x, and he buy pen of Rs. x. 

Let n pens are purchased in Rs x. 

∴ Total spent money = cost of one pen × total pen 

⇒ x = 5 × n ⇒ n = x/5.

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