Use i=prt, the formula for simple interest over t years to find i when p=$2000, r=6%, and t=18 months

The given formula to use id i = prt

where p = $2000

r = 6% = 6 / 100 = 0.06

and time t = 18 months

the formula is for interest over t years, so we have to convert time t in years

1 year is equal to 12 months, so 18 months is equal to 1.6 years

i = prt

i = $2000 x 0.06 x 1.6

i = $192

$192 is the simple interest over 18 months