After decreasing 50% in the price of an article costs Rs.620. Find the actual cost of an article?  Choose the correct option
A) 1400
B) 1240
C) 1200
D) 1100
E) 1500

Rationale: "cp * ( 50 / 100 ) = 620 cp = 12.4 * 100 = > cp = 1240 answer : b"
Answer: B