queenkimm26
07.07.2019 •
Mathematics
After 9 months, the simple interest earned on an investment of $1200 is $72. find the interest rate.
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Ответ:
Here i = $72 = $1200 r (9/12) (9 months is 9/12, or 3/4, of 1 year)
Reducing,
$72 = $900r
Solving for r, r=0.08, or 8 percent per year.
Ответ:
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