There is enough provisions for 600 men in an army camp for 25 days. If there were 200 men less, how long will the provision last? Choose one:	A) 50 days	B) 60 days	C) 70 days	D) 75 days	E) 90 days

Rationale: exp : we have , m 1 d 1 = m 2 d 2 600 * 25 = 200 * d 2 d 2 = 600 * 25 / 200 = 75 days . answer : d
Answer: D