Answer:
The rate of percentage is 5.00% .
Step-by-step explanation:
Formula
[tex]Simple\ interest = \frac{Principle\times Rate\times Time}{100}[/tex]
As given
Diana invested $3000 in a saving account for 3 years.
she earned $450 in interest over the time period.
Principle = $3000
Simple interest = $450
Time = 3 year
[tex]450= \frac{3000\times Rate\times 3}{100}[/tex]
[tex]\frac{450\times 100}{3000\times 3}= \frac{Rate}{100}[/tex]
[tex]\frac{45000}{9000}= Rate[/tex]
Rate = 5%
Therefore the rate of percentage is 5.00% .
