Answer:
514.5
Explanation:
We will assume SIMPLE INTEREST for this problem.
The formula for simple interest is:

Where
i is the simple interest earned
P is the principal
r is the rate of interest (in decimal)
t is the time , in years
Given in the problem,
P = 4900
r = 3,5% = 3.5/100 = 0.035
t = 3 years
Substituting, we find the interest earned:

The interest earned is 514.5