If a supply of feed lasts for 4 days for 12 pigs, how long will it last if there are 24 pigs?

To understand how long the supply of feed will last for 24 pigs, we first need to determine the total amount of feed in terms of "pig days."

If 12 pigs can be fed for 4 days, we calculate the total pig days as follows:

12 pigs × 4 days = 48 pig days.

This means that the supply of feed can sustain 48 pig days of consumption.

Now, if we have 24 pigs, we need to find out how many days the same amount of feed will last. We divide the total pig days by the number of pigs:

48 pig days ÷ 24 pigs = 2 days.

Thus, the supply of feed will last for 2 days when there are 24 pigs. This is why the correct answer is that the feed supply lasts for 2 days. The reasoning demonstrates the inverse relationship between the number of pigs and the number of days the feed lasts; as the number of pigs doubles, the duration the feed lasts is halved.