Question 999173
James invested some money at 6% interest. James also invested $209 more than 3 times that amount at 12%. How much is invested at each rate if James receives $1030.98 in interest after one year?

James invested x at 6% interest.
James also invested 3x+$209  at 12%. 
Interest = 1030.98

6%x + 12%(3x+209) = 1030.98
multiply by 100

6x +12(3x+209) = 103098

6x+36x+2508 = 103098

42x = 100590

x=2395

James invested %2395 at 6% interest.
plug x in 3x+209
 James also invested $7394 at 12%.