I need Help please.....
1 answer:
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Answer:
The amount invested at 4% was $600
The amount invested at 7.5% was $3,600
Step-by-step explanation:
Let
x ----> the amount invested at 4%
$4,200-x -----> amount invested at 7.5%
we know that
The total interest earned is equal to the interest earned by the amount invested at 4% plus the interest earned by the amount invested at 7.5%
Remember that
so
The linear equation that represent this situation is
Solve for x
therefore
The amount invested at 4% was $600
The amount invested at 7.5% was $3,600