SSC CGL 9 Aug 2015 Shift 2 Paper

C.P of article
= Rs. 100 (let)
∴ Marked price = Rs. 140
At 12% gain, S.P.
= Rs. 112
∴ Discount = 140 – 112
= Rs. 28
If the rate of discount be x%, then
140 × x% = 28
⇒ $\frac{140\times \mathit{x}}{100}$ = 28
⇒ x = $\frac{28\times 100}{140}$ = 20%