Question

Chase baked 4/5 dozen brownies in 3 hours ? What is her average of baking per hour ?

Answer 1

Answer:

$3\frac{1}{5}$brownies per hour

Step-by-step explanation:

     Given parameters:

Number of brownies = $\frac{4}{5}$ of a dozen

Time taken  = 3hrs

Unknown:

Average baking per hour = ?

Solution:

The average baking per hour;

    This is a rate problem;

     Average baking per hour = $\frac{number of baking}{time}$

Number of brownies = $\frac{4}{5}$ x 12  = $\frac{48}{5}$

 Average baking per hour = $\frac{48}{\frac{5}{3} }$  

                                            = $\frac{48}{5} x \frac{1}{3}$

                                             = $\frac{16}{5}$

                                            = 3$\frac{1}{5}$brownies per hour