Answer:
He earned $292.5 total interest.
Step-by-step explanation:
simple interest: [ principal * annual interest rate * time ( in years ) ] /100
Here the principal is $1800, annual interest rate is 6.5%, time in years:
(30/12)→ 2.5 years.
Using the formula:
(1800 * 6.5 * 2.5)/100
$292.5
Total money: $292.5 + $1800 = $2092.5
