At a school store, 6 pencils sell for $.99. At this rate, what is the cost of 16?

1.65

0.99 / 6 = $0.165 each

16 * 0.165 = ?

To find the cost of 16 pencils at the same rate, we can set up a proportion.

Let's call the cost of 16 pencils "x". According to the given information, 6 pencils cost $0.99.

We can set up the proportion as:

6 pencils / $0.99 = 16 pencils / x

To solve this proportion, we can cross-multiply:

6x = 16 * $0.99

Now, we can solve for x by dividing both sides of the equation by 6:

x = (16 * $0.99) / 6

Evaluating this expression, we have:

x = $2.64