The problem states that six kilograms of carrots cost $16.80. We need to find the approximate cost of one kilogram of carrots and round the answer to the nearest whole number.

1. Problem Description

The problem states that six kilograms of carrots cost $16.

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0. We need to find the approximate cost of one kilogram of carrots and round the answer to the nearest whole number.

2. Solution Steps

To find the cost of one kilogram of carrots, we divide the total cost by the number of kilograms.

Cost per kilogram = $\frac{Total Cost}{Number of Kilograms}$

Cost per kilogram = $\frac{16.80}{6}$

Cost per kilogram = $2.80$

Since we need to give the answer as a whole number, we round $2.80$ to the nearest whole number.

$2.80$ rounded to the nearest whole number is $3$.

3. Final Answer

$3$