algebra
posted by Ressie .
Barney and George invested the same amount in two funds. Barney earned 4% and Fred earned 2%. If they earned $420 together. how much did they each invest?

1. let "x" be the amount they invested
2. let both their total investments equal 420 (Ex. Barney: 0.04x Fred: 0.02x)
3. Write equation:
0.04x + 0.02x = 420
4. Solve!!! :D