A dealer marks his goods 20% above cost price. He then allows some discount on it and makes a profit of 8%. The rate of discount is:  Choose the correct answer:
A) 16 %
B) 22 %
C) 25 %
D) 10 %
E) 15 %
Explanation:   C.P = Rs. 100   Marked Price = Rs. 120,   S.P = Rs. 108   10 %iscount = (12/120 × 100)% = 10%   ANSWER:10 %
<result>D</result>
A dealer marks his goods 20% above cost price. He then allows some discount on it and makes a profit of 8%. The rate of discount is: