Jane marko buys a car for 43,900. in three years, the car depreciates 48% in value. how much is the car worth in three years ?

Take $43,900 and devide by 100 to find how much 1% is.

1% equals $439 

If it depreciates 48%, that means that 52% of the value is left

So take $439 (1%) and multiply by 52 to get the final answer

$22,828

Thats the long way, you could also do 

(total value) x (0.the percentage) =Total
So:
43,900  x 0.52 = 22,828