A garrison of 400 men had a provision for 31 days. After 28 days 280 persons re-enforcement leave the garrison. Find the number of days for which the remaining ration will be sufficient? Choose the correct choice:
A) 22	B) 88	C) 10	D) 99	E) 27
400 --- 31   400 --- 3   120 --- ?   400*3 = 120*x =&gt; x =10 days   Answer: 10
<result>C</result>
A garrison of 400 men had a provision for 31 days. After 28 days 280 persons re-enforcement leave the garrison. Find the number of days for which the remaining ration will be sufficient?