### Home > PC3 > Chapter 3 > Lesson 3.2.2 > Problem3-112

3-112.

If Arnold invests $\6500$ at $4\%$ per year, how much additional money must he invest at $10\%$ to ensure that the interest he receives each year is $8\%$ of the total invested?

$6500\left(0.04\right)+x\left(0.10\right)=\left(6500+x\right)\left(0.08\right)$