algebra, compound application

Question

Tiffany invests $1600 in one account and $2100 in an account paying 2 % higher interest. At the end of one year she had earned $190 in interest. At what rates did she invest?

Answer 1

1600x+ 2100(x+.02) = 190

x= interest rate of $1600

x+.02 = interest rate on $2100

3700x = 190-42

x = 148/3700 =.04 = 4%

x+.02= 6%

64+126=190