Answer :
1) Gathering the data
Jessica waxes 20 m² 3/5 hour
x 1 hour
2) Since this question wants the unit rate, and considering that Jessica is at a constant rate we can use a proportion to find that.
20 m² 3/5 hour
x 1 hour
This is the same as:
[tex]\begin{gathered} \frac{20}{x}=\frac{\frac{3}{5}}{1} \\ \frac{3}{5}x\text{ =20 } \\ 3x=100\text{ } \\ x=33.33\text{ m} \end{gathered}[/tex]3) So Jessica can wax approximately 33.3 m² per hour