The length of the loan in months is 151. 33 months
The formula for determining simple interest is expressed as;
I = PRT/100
Where;
From the information given, we have that;
Principal interest = $600
Simple interest = $681
Rate = 9%
Substitute the values into the formula
$681 = $600 × 9 × T/100
Multiply the numerators
$681 = 5400T/100
cross multiply
68100 = 5400T
Divide both sides by 5400
T = 68100/5400
T = 12. 61 years
Convert the years to months
T = 12.61(12)
T = 151. 33 months
Hence, the value is 151. 33 months
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