Solution:
Given that,
Principal = $ 500
Rate of interest = 5 %
Number of years = 18
The simple interest is given as:
[tex]I = \frac{p \times n \times r}{100}[/tex]
Where,
p is the principal
n is the number of years
r is the rate of interest
Therefore,
[tex]I = \frac{500 \times 18 \times 5}{100}\\\\I =25 \times 18\\\\I = 450[/tex]
How much money is in his account?
Amount = principal + simple interest
Amount = 500 + 450
Amount = 950
Thus $ 950 is in account after 18 years