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:

– by
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:

A. 12%
B. 10%
C. 6%
D. 4%
Explanation:
C.P = Rs. 100
Marked Price = Rs. 120,
S.P = Rs. 108
Discount = (12/120 × 100)% = 10%