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A stationer sold 1 dozen of pens at the rate Of Rs 25 each and gained Rs 120 altogether. How much was the cost price of the pens.
Given: A stationer sold 1 dozen of pens at the rate of Rs 25, each and gained Rs 120 altogether.
To do: Find the CP Of the Pens.
Solution:
Total selling price = $25\times12 = Rs.300$
Total profit = $120$
Total profit = Total selling price $-$ Total cost price
$120 = 300 - $ Total cost price
=> Total cost price = $300 -120 = Rs 180$
Cost of 12 pens = $180$
=> Cost of 1 pen = $\frac{180}{12}$
Therefore, the CP of the pens are Rs 15
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