Christopher has six times as much money as Michael. If Michael earns $80 and Christopher earns $60, Christopher will then have three times as much money as Michael. How much money do Christopher and Michael have before and after earning $60 and $80, respectively?

360 and 60.

Step-by-step explanation:

Let Christopher earns x amount of money and y be money earned by Michael.

Firstly, Christopher has six times as much money as Michael so,

x=6y ... (i)

If Michael earns $80 and Christopher earns $60, Christopher will then have three times as much money as Michael so,

x+60=3 (y+80)

From (i),

6y + 60 = 3 (y+80)

3 (2y+20) = 3 (y+80)

2y+20=y+80

2y-y=80-20

y=60

Substituting value of y in equation (i),

x=6*60=360.

Therefore, Christopher earned 360 and Michael earned 60.