Final answer:
To find out how many cookies there are in a pack with 25% extra cookies, calculate 25% of the original 16 cookies, which equals 4 additional cookies. Add this to the original count, resulting in 20 cookies in a pack.
Step-by-step explanation:
If there are normally 16 cookies in a pack and there is a temporary increase of 25% more cookies,
we first need to calculate 25% of 16. To do this, we can multiply 16 by 0.25 (which is the decimal equivalent of 25%).
16 x 0.25 = 4
Now that we know the increase amounts to 4 cookies, we add this to the original count to find the new total.
16 + 4 = 20 cookies
Therefore, there are now 20 cookies in a pack.