A trader has purchsed pens at the rate of Rs. 42 per dozen. If the profit earned is 14 2/7% what is the selling price?

CP of 12 pens = Rs. 42
CP of 1 pen = Rs. 3.50

profit % = 1007 %
profit % = profitCP ×100%1007 = profit7/2×100Profit = Re. 0.50    Profit = SP - CP    SP = 0.50 + 3.50 = Rs.4.00

SP of a pen = Rs. 4.00
 

  • -4

we cant solve it without knowing the no. of pens he bought

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