Question

A) write a system of equations that will help Juan find the amount that should be invested in each account Total amount invested ?total interest earned ?B) How much does Juan need to invest in each account to earn 8100 per year Juan needs to invest ____ on the account paying 3% and ____ in the account paying 4% interest

Answer 1

A)

Total amount invested

`A+B=250.000`

Total interest earned

`\begin{gathered} I_A+I_B=8.100 \\ A\cdot0.03+B\cdot0.04=8.100 \\ 0.03\cdot A+0.04\cdot B=8.100 \end{gathered}`