How do you find the invest from the start

Ok so a person earns $750 on her money market investment, it’s over a 6 year period of time, the interest rate is 5%, trying to figure out how much money did the person invest in the money market from the beginning
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1 Answer

If this is simple interest and $750 is the interest on the investment we have:

750=P×6×0.05, where P is the investment value. So P=750/0.30=$2500.

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