Answer:
5.24 years
Step-by-step explanation:
Given: New car purchased for $24000
rate of depreciation is 6.75%
Residual value= $15500
.
First, lets find the amount of depreciation over a period of time.
Amount of depreciation= 
∴ Amount of depreciation = $8500
Lets assume the number of years be "x"
Now, using straight line method to find the number of years to have value of car as $15500.
Amount of depreciation= 
∴
⇒
dividing both side by 1620
⇒ 
∴ x= 5.24 years
Hence, It will take 5.24 years until the value of car is $15500.