Delhi Police Constable Exam Model Paper 1

Discount = 40%
Profit = 50%
Formula used:
S.P. = (100 + Profit%)C.P.
S.P. = (100 - Discount%)M.P.
Calculation:
Let the M.P. be Rs. 100
S.P. = (100 - Discount%)M.P.
⇒ S.P. = 60% × 100
⇒ S.P. = 60
S.P. = (100 + Profit%)C.P.
⇒ 60 = 150% × C.P.
⇒ 60/150 × 100 = C.P.
⇒ C.P. = 40
Required ratio = C.P. ∶ M.P.
⇒ Required ratio = 40 ∶ 100
⇒ Required ratio = 2 ∶ 5
∴ The ratio of C.P. to M.P. is 2 ∶ 5.