0.06x + 0.045(100,000-x)=5,025
The equation above represents the following situation: John inherits $100,000 and invests it in two certificates of deposit. One pay 4.5% simple interest annually , and an investment with higher penalties for early withdrawal pays 6% simple interest annually. John's total interest from these investments is $5,025 at the end of the first year.
Suppose John invested x dollars at 6% . Which of the following describes what the expression 0.045 (100,000-x) represents in the equation ?

Options

A. The portion of the inheritance invested at 4.5%
B. 4.5% of $100,000
C. The amount of interest earned from the 6% investment
D. The amount of interest earned from the 4.5% investment

Answer

D