Simpe interest rate = PRT/100
— ( principal x rate x time ) / 100
$3,000 is the principal
3 years is the time
2% is the rate
so, PRT/100
(3,000 x 3 x 2) / 100
= $180
Answer : $180
To find this answer multiply the cost of the ice cream by 18%/100, or .18
$154 x .18 = $27.72
Related to some parameters:
the car mass
the car speed
the direction of the impact