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makvit [3.9K]
3 years ago
9

Mrs. Powell has $800 invested in stocks and $500 invested in a Certificate of Deposit. The CD has an interest rate twice as grea

t as the stocks. If her annual interest on these two investments is $45, at what rate of interest is the $500 invested?
Mathematics
2 answers:
Mashutka [201]3 years ago
7 0
Let's use the variable "r" to represent the investment rate of the stocks:
2r(500) + r(800) = 45
1000r + 800r = 45
1800r = 45
r = 0.025
2r = 0.05
The $500 is invested at 5%
vodomira [7]3 years ago
6 0

Answer:

$500 at 5%

Step-by-step explanation:

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