Question

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

Answer 1

`3(1)/(5)`brownies per hour

Explanation:

Given parameters:

Number of brownies =
`(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 =
`(number of baking)/(time)`

Number of brownies =
`(4)/(5)` x 12 =
`(48)/(5)`

Average baking per hour =
`(48)/((5)/(3) )`

=
`(48)/(5) x (1)/(3)`

=
`(16)/(5)`

= 3
`(1)/(5)`brownies per hour