Respuesta :

9514 1404 393

Answer:

  8 days

Step-by-step explanation:

Assuming the number of days is inversely proportional to the number of people, increasing the number of people by a factor of 25/20 = 5/4 will decrease the number of days by the factor 4/5.

  (4/5)(10 days) = 8 days

The provisions will last 8 days if 5 more people join the camp.

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