In first 300men had provision for 90days after 20days 50men left the fort how long would the food last at the same rate
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Let us take n as amount for one person for one day
food for 300men for 90days = 300*90*n = 27000n
food used by 300 for 20days = 300*20*n = 6000n
Food left = 27000n - 6000n = 21000n
no of people now = 300 - 50 = 250
Food needs for 250people = 250n
No of days the food will last = 21000n/250n = 84days
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