Answer:
3 years: $27691.30
7 years: $23359.70
Explanation:
3.5% of 30,940 = 1082.9
for each year there is interest, we multiply it by that amount of years.
equation: 1082.9x
3 years: 3248.7
7 years: 7580.3
since interest is subtracted, we will subtract the multiplied interests from above.
equation: 30940 - 1082.9x = answer
3 years: $27691.3
7 years: $23359.7