1200 men have provisions for 15 days. If 200 more men join them, for how many days will the provisions last now?  Choose the most appropriate option:  A) 12.85  B) 12.62  C) 12.5  D) 12.24  E) 12.1

Rationale: "1200 * 15 = 1400 * x x = 12.85 . answer : a"
Answer: A