Steps:
[tex]i=prt[/tex]
interest = principal (original amount of money) × rate (interest rate-usually in percent) × time (usually in months)
[tex]i = 1500 \times 1.2\% \times 9[/tex]
[tex]1.2\% = 0.012[/tex]
[tex]i = 1500 \times 0.012 \times 9[/tex]
[tex]i = 18 \times 9[/tex]
[tex]i = 162[/tex]
The simple interest for 9 months is $162.
