You can put this solution on YOUR website! someone has 20% more money than you. They have 50 cents more than you do. How much money do you have?
------
Equations:
a = 1.20u
a = u + 50
------
1.20u = u+50
0.20u = 50
u = $2.50 (amt. of money you have)
------------------------
Cheers,
Stan H.