Answer :
Answer:
Madison has earned 180 dollars in all.
Step-by-step explanation:
Let [tex]x[/tex] denotes amount earned by Madison.
Percentage of amount saved by Madison [tex]=\frac{40}{100} x[/tex]
Amount saved by Madison [tex]=72[/tex] dollars
Therefore,
[tex]\frac{40}{100}x=72\\x=72(\frac{100}{40})[/tex]
[tex]=180[/tex] dollars
So,
Madison has earned 180 dollars in all.