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Answer:
Let p be the amount invested at 8%. Then the amount invested at 5% would be 30,000-p. So:
.08p+.05(30,000-p)=2100
.03p+1500=2100
.03p=600
p=20,000
$20,000 was invested at 8%; $10,000 was invested at 5%
Step-by-step explanation:
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$20,000 was invested at 8% and $10,000 was invested at 5%
What is Algebra?
Algebra is the study of graphic formulas, while logic is the interpretation among those signs.
Mrs. B. invested ¢30,000; part at 5%, and part at 8%.
The total interest on the investment was $2,100.
Let p be the amount invested at 8%.
Then the amount invested at 5% would be 30,000 – p.
Then the equation will be
0.08p + 0.05(30000 – p) = 2100
On simplifying, we have
(0.08 – 0.05)p + 1500 = 2100
0.03p = 600
p = $20,000
$20,000 was invested at 8% and $10,000 was invested at 5%
More about the Algebra link is given below.
https://brainly.com/question/953809
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