It takes 9 years for her to earn $250 simple interest.
Simple Interest
Simple interest is the amount of interest charged with the given rate of interest for the given time .
Simple Interest formula
Formula to find simple interest
[tex]I=pnr[/tex]
where I is the interest earned
p is the amount invested
'n' is the time period and 'r' is the rate of interest.
Given that principal amount invested is 600 dollars.
interest rate r= 4.5%= 0.045
Interest is 250 dollars.
we need to find out 'n'
[tex]I=pnr\\250=600 \cdot 0.045 \cdot n\\ 250=27n\\\frac{250}{27} =n\\n=9 years[/tex]
So, it takes 9 years for her to earn $250 simple interest.
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