A garrison of 2000 men has provisions for 54 days. At the end of 15 days, a reinforcement arrives, and it is now found that the provisions will last only for 30 days more. What is the reinforcement?  Choose the most appropriate option.
A) 1800 men	B) 3900 men	C) 600 men	D) 3800 men	E) 900 men
2000 ---- 54   2000 ---- 39   x ----- 20   x*30 = 2000*39   x = 2600   2000   -------   600   ANSWER:600 men
<result>C</result>
A garrison of 2000 men has provisions for 54 days. At the end of 15 days, a reinforcement arrives, and it is now found that the provisions will last only for 30 days more. What is the reinforcement?