Correct Answer - Option 3 : 17%
Given:
M.P = 28% above C.P
Gain = 6%
Formula Used:
Discount% = (M.P - S.P)/M.P × 100
Calculations:
Let the C.P of the shoes be 100.
∴ M.P = 128% of 100
⇒ 128
S.P = 106% of 100
⇒ 106
∴ Discount% = (M.P - S.P)/M.P × 100
⇒ (128 - 106)/128 × 100
⇒ 17.18 ≈ 17%
The discount allowed to gain 6% is 17%.