At what price must an article costing Rs.200 be marked in order that after deducting 10% from the list price. It may be sold at a profit of 20% on the cost price? Choose the correct answer:
A) 62.5 B) 62.0 C) 266.67 D) 62.1 E) 62.2

Rationale: "cp = 200 sp = 200 * ( 120 / 100 ) = 240 mp * ( 90 / 100 ) = 240 mp = 266.67 answer : c"
Answer: C