Question

A garrision of 100 men had provision for 50 days.aftr 10 days 20 men left..then how many days food lasts??

Answer 1

100 men will survive for 50 days.
After 10 days, days remaining = (50-10) = 40 days.
When 20 men left, men remaining = (100-20) = 80 men.
Food will last for = (100x40)/80 = 50 days.

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