Question
A student bought 10 pencils and 8 pens at Rs 150. He
sells pencil at 4%profit and pen at 7%profit. Overall, he gains Rs 9 Find the cost price of each pencil and pen.Solution
Cp = 150, Profit = 9 Profit% = (9/150) ×100=6% Pencil              Pen            4%                  7%                       6%            1         :          2 CP-     50       :          100 Cost of each pencil and pen - Pencil = 50/10 =5Rs Pen = 100/8 = 12.5 Rs
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