Question

COOKIES Bobby baked 2 dozen chocolate chip cookies, 3 dozen sugar cookies, and a dozen oatmeal raisin cookies. How many total cookies did he bake?

Short answer

The total number of cookies baked is 72.

Step-by-step solution

– Write the given information

Booby baked:

2 dozen chocolate cookies, 3 dozen sugar cookies, and 1 dozen oatmeal raisin cookies.

– Formula used

$1\mathrm{dozen}\mathrm{cookies}=12\mathrm{cookies}$.

– Find the total number of cookies baked

First note that:

$$\begin{gathered} 2\mathrm{dozen}\mathrm{chocolate}\mathrm{cookies}=2\times 12=24\mathrm{chocolate}\mathrm{cookies}, \\ 3\mathrm{dozen}\mathrm{sugar}\mathrm{cookies}=3\times 12=36\mathrm{sugar}\mathrm{cookies},\mathrm{and} \\ 1\mathrm{dozen}\mathrm{oatmeal}\mathrm{raisin}\mathrm{cookies}=12\mathrm{oatmeal}\mathrm{raisin}\mathrm{cookies}. \end{gathered}$$

Thus, the total number of cookies baked is:

$\begin{array}{c}\text{Totalcookies}=24+36+12\\ =72\end{array}$

Thus, the total number of cookies baked is 72.