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Food was available for 100 people for 24 days. If 20 people departed the area, the provision would remain in effect for

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30 days

965

days

120 days

40 days

answer is A.

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Detailed Solution

It is given that food was available for 100 people for 24 days.
Then 1 person will have provision for

100 × 24 = 2400 days .

If 20 people departed the area, then the remaining will be 80 people.
Therefore, the food supply will run out sooner the more people there are.
So, the food supply is directly proportional to the people.
Now 80 people will have the provision for

240080 =30 days .

Therefore, if 20 people leave the area, the provision will remain in effect for 30 days.
Hence, option (1) is correct.

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