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 from the following answers:
A) 10 days B) 20 days C) 5 days D) 25 days E) 15 days
400 --- 31   400 --- 3   120 --- ?   400*3 = 120*x =&gt; x =10 days   10 daysNSWER 10 days
<result>A</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?