Answer:
The annual salary earned by the girl = $22,921.6
and
the annual salary earned by the boy = $5,730.4
Explanation:
Given:
The girl works on Mondays , Tuesdays, Wednesdays, and Fridays
i.e the girl works 4 days a week
while,
The boy works on Thursdays i.e only 1 day a week
now,
the total working days in a week = 5
thus,
The girl works [tex]\frac{4}{5}[/tex] times a week
and
boy works [tex]\frac{1}{5}[/tex] times a week
that also means
The girl works [tex]\frac{4}{5}[/tex] times annually
and
boy works [tex]\frac{1}{5}[/tex] times annualy
hence,
the annual salary earned by the girl = [tex]\frac{4}{5}[/tex] times the annual salary
= [tex]\frac{4}{5}\times28,652[/tex] = $22,921.6
and
the annual salary earned by the boy = [tex]\frac{1}{5}[/tex] times the annual salary
= [tex]\frac{1}{5}\times28,652[/tex] = $5,730.4