Answer:
She have $4960 in her account at the end of 3 years
Step-by-step explanation:
Yvonne put in a savings account.= $4,000
Principal = $4,000
At the end of 3 years, the account had earned $960 in simple interest.
So, Simple interest = $960
Amount = Principal +interest = $4000 +$960=$4960
Hence She have $4960 in her account at the end of 3 years