Jessica earned a total of $647 in simple interest from two seperate accounts. In an account earning 9% interest, Jessica invested $2,300 more than twice the amount she invested in an account earning 2%. How much did she invest in each account?

Answer 1

Invested:
Po @ 2%.
(2Po+2300) @ 9%.
t = 1 yr.?

I = Po*r*t + (2Po+2300)*r*t = 647.
Po*0.02*1 + (2Po+2300)*0.09*1 = 647,
0.02Po + 0.18Po + 207 = 647,
0.20Po = 440, Po = $2200.

2Po+2300 = 2*2200 + 2300 = $6700.