DRDO Multi tasking staff Model paper 5

Let the marked price of an article be Rs. x.
∵ Discount = 12%
∴ Its S.P = Rs. 0.88x
∴S.P = C.P + 32C.P/100
⇒ S.P = C.P × (132/100)
⇒ C.P = S.P × (100/132)
⇒ C.P = 0.88x × 100/132 = 2x/3
Now, M.P = Rs. x and C.P = 2x/3
⇒ M.P - C.P = x - 2x/3 = x/3
Required Percentage =

x 3

2 x 3

= 50%