Answer:
120%
Step-by-step explanation:
Let x = cars weight
 
Since truck weighs 20% more,
 
 Trucks weight = x + .20x =1.20x 
 
To find the oercentage of trucks weight to car;s weight,
 
 Truck weight ÷ car's weight
 
 = 1.20x / x
 = 1.20
 
 = 120% when converting the decimal to a per cent
 
The trucks weight is 120% of the car's weight