In a fort 360 men head provision for 21 days if 60 more men join them how long will the provisions last?
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Answer:
18 days
Step-by-step explanation:
The number of men and the number of days food will last are inversely proportional. If two quantities are inversely proportional, their product remains constant.
Let the number of days food will last be x.
=> 360 × 21 = (360+60) × x
=> 360 × 21 = 420 × x
=> 360/20 = x
=> x = 18
Hence, the food will last for 18 days.
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18 days is the right answer
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