Answer:
Shannon earns the least and Mary earns the most.
Step-by-step explanation:
We are given that,
John earns = $20 per week.
Also, Shannon earns [tex]\frac{2}{3}[/tex] of what John earns.
i.e. Shannon earns = [tex]\frac{2}{3}\times 20[/tex] = [tex]\frac{40}{3}[/tex] = $13.3 per week.
Plus, Mary earns [tex]1\frac{2}{3}[/tex] of what John earns.
i.e. Mary earns = [tex]\frac{5}{3}\times 20[/tex] = [tex]\frac{100}{3}[/tex] = $33.3 per week.
Since, $33.3 > $20 > $13.3
So, we get,
Shannon earns the least and Mary earns the most.