Answer:
The total amount invested at 5% is $123,000
The total amount invested at 6% is $390,000
Explanation:
M = amount of money invested at 5%
3M + 21,000 = amount of money invested at 6%
0.05M + 0.06(3M + 21,000) = 29,550
0.05M + 0.18M + 1,260 = 29,550
0.23M = 28,290
M = 28,290 / 0.23 = 123,000
3M + 21,000 = 369,000 + 21,000 = 390,000