Answer:
$3000.
Step-by-step explanation:
Simple interest formula,
I = (P*R*T)/100
Where,
P = original investment l,
R = rate of the interest,
T = time of the rate accured,
I = interest.
Balance = interest, I + original investment, P.
3330 = (P*5.5*2)/100 + P
Making P the subject of formula,
3330 = 0.11P + P
1.11P = 3330
Therefore,
P = $3000
$3000 was the principal investment.
