Question

A Girl Scout troop recorded how many boxes of cookies they sold each day for a week.
Boxes of Girl Scout cookies sold
Day Boxes of cookies
Monday 70
Tuesday 80
Wednesday 68
Thursday 81
Friday 80
According to the table, what was the rate of change between Tuesday and Thursday?
boxes per day

Answer 1

To calculate the rate of change in boxes of cookies sold between Tuesday and Thursday, you can use the formula for rate of change:

\[
\text{Rate of change} = \frac{\text{Change in quantity}}{\text{Change in time}}
\]

From the data given:
- Boxes sold on Tuesday = 80
- Boxes sold on Thursday = 81

The change in quantity from Tuesday to Thursday is:
\[
81 - 80 = 1 \text{ box}
\]

The change in time from Tuesday to Thursday is 2 days (Tuesday to Wednesday and Wednesday to Thursday).

Now we can calculate the rate of change:
\[
\text{Rate of change} = \frac{1 \text{ box}}{2 \text{ days}} = 0.5 \text{ boxes per day}
\]

So, the rate of change between Tuesday and Thursday is **0.5 boxes per day**.