Answer:
Step-by-step explanation:
In the past, the service charge has been $5.00.
Her previous balance was $619.83.
Her total deposits was $398.50
Her total withdrawal was $471.63
Total interest earned was $2.50
Total income = 398.50 + 2.50 = $401
Her balance = (619.83 + 401) - 471.63 = 549.2
If her present balance is $540.70, it means that the service charge is
549.2 - 540.70 = 8.5
Since her previous service charge was $5, the amount by which her service charge increased would be
8.5 - 5 = $3.5
