Final answer:
To find out how many of the 40 pies are not chocolate when 60% are chocolate, you first calculate the number of chocolate pies (24) and then subtract that number from the total (40) to get 16 non-chocolate pies.
Step-by-step explanation:
The question asks us to find out how many pies are not chocolate out of 40 pies, knowing that 60% of them are chocolate pies. To solve this, first we need to determine the number of chocolate pies by taking 60% of 40, which is calculated as (60/100) * 40. This gives us 24 chocolate pies. To find out how many pies are not chocolate, we subtract the number of chocolate pies from the total number of pies, so we do 40 - 24, which leaves us with 16 pies that are not chocolate.