Question 43686
Teresa Puelo purchases a $5000 bond that earns 7.5% annual simple interest. How much money does Teresa have invested in bonds that earn 8% annual simple interest if the total annual interest earned from the two investments is $615?

Let amount invested at 8% be "x".

EQUATION:
interest + interest = 615
0.075(5000)+0.08x=615
375+0.08x=615
0.08x=240
x=$3000 (amount invested at 8%)
Cheers,
Stan H.