1.

A man purchased 150 pens at the rate of ₹ 12 per pen. He sold 50 pens at a gain of 10%. The percentage gain at which he must sell the remaining pens so as to gain 15% on the whole outlay is

A. 21 1 % 2
B. 20%
C. 17%
D. 17 1 % 2
Answer» E.


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