[tex]\begin{gathered} \text{If she can dry and fold 5 loads in 3 1/2 hous, that is in 3.5 hours, ten per hour she does} \\ \frac{3.5}{5}=0.7 \\ \\ \text{The average time it takes is 0.7 hours!} \\ \\ \text{now, in minutes, it is } \\ 0.7\cdot60=42 \\ \\ \text{ It takes 42 minutes} \end{gathered}[/tex]
