Answer: 8%
Explanation:
current balance = $750
Period = 3years
Final amount at the end of the third year = $944.78
Rate =?
Using the compound interest formula :
A = P( 1 + r/n)^nt
Where : A= final amount plus interest
P = principal amount
r = interest rate
t = period
n = number of compounding periods per year = 1
A = P( 1 + r)^t
944.78 = 750(1 + r)^3
Divide both side by 750
944.78/750 = (1+r)^3
1.2597 = (1+r)^3
Take the cube root of both sides
1.07999 = 1+r
r = 1.07999 - 1
r = 0.07999
r = (0.07999) * 100%
r = 7.999% = 8%
