Brenda ordered 12 dozen cookies from Briona’s Bakery for the family reunion.
1/3
of the cookies are peanut butter cookies.
1/6
of the cookies are iced sugar cookies.
3/8
of the cookies are chocolate chip cookies.
The rest of the cookies are oatmeal cookies.
How many cookies are oatmeal cookies?
The total number of cookies is 12 dozen x 12 cookies/dozen = <<12*12=144>>144 cookies.
The number of peanut butter cookies is 144 cookies x 1/3 = <<144*1/3=48>>48 cookies.
The number of iced sugar cookies is 144 cookies x 1/6 = <<144*1/6=24>>24 cookies.
The number of chocolate chip cookies is 144 cookies x 3/8 = <<144*3/8=54>>54 cookies.
The number of oatmeal cookies is 144 cookies - 48 cookies - 24 cookies - 54 cookies = <<144-48-24-54=18>>18 cookies. Answer: \boxed{18}.
To find the number of oatmeal cookies, we need to subtract the fraction of each type of cookie from the total.
First, let's calculate the total number of cookies ordered by multiplying 12 dozen by 12 (since there are 12 cookies in a dozen):
Total = 12 dozen * 12 = 144 cookies
Next, let's calculate the number of peanut butter cookies:
Peanut butter = (1/3) * 144 = 48 cookies
Then, let's calculate the number of iced sugar cookies:
Iced sugar = (1/6) * 144 = 24 cookies
After that, let's calculate the number of chocolate chip cookies:
Chocolate chip = (3/8) * 144 = 54 cookies
Now, let's subtract the number of each type of cookie from the total to find the number of oatmeal cookies:
Oatmeal = Total - Peanut butter - Iced sugar - Chocolate chip
Oatmeal = 144 - 48 - 24 - 54 = 18 cookies
Therefore, there are 18 oatmeal cookies.
To find out how many cookies are oatmeal cookies, we need to subtract the number of peanut butter cookies, iced sugar cookies, and chocolate chip cookies from the total number of cookies.
First, let's find the total number of cookies. Brenda ordered 12 dozen cookies, and since a dozen is equal to 12, 12 dozens of cookies would be 12 x 12 = 144 cookies.
Next, let's find the number of peanut butter cookies. 1/3 of the cookies are peanut butter cookies, so we can calculate this by dividing the total number of cookies by 3:
144 / 3 = 48 peanut butter cookies.
Then, let's find the number of iced sugar cookies. 1/6 of the cookies are iced sugar cookies, so we can calculate this by dividing the total number of cookies by 6:
144 / 6 = 24 iced sugar cookies.
Next, let's find the number of chocolate chip cookies. 3/8 of the cookies are chocolate chip cookies, so we can calculate this by multiplying the total number of cookies by 3/8:
144 x 3/8 = 54 chocolate chip cookies.
Now, let's add up the number of peanut butter cookies, iced sugar cookies, and chocolate chip cookies:
48 + 24 + 54 = 126.
Finally, let's subtract the number of peanut butter cookies, iced sugar cookies, and chocolate chip cookies from the total number of cookies to find the number of oatmeal cookies:
144 - 126 = 18 oatmeal cookies.
Therefore, there are 18 oatmeal cookies.