Answer:
Fraction of fire trucks = 
Total number of toy cars = 
Step-by-step explanation:
Fraction of sports car = 
Fraction of remaining cars 
So,
Fraction of pick up cars = 
Therefore,
Fraction of fire trucks = 
That is Number of fire trucks =  ( Total number of toy cars )
 ( Total number of toy cars )
Number of fire trucks = 4
Total number of toy cars = 
 
        
             
        
        
        
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Solve the incomplete quadratic equation:

Solution set:   
S = {0,  8}.
I hope this helps. =)
 
        
             
        
        
        
Answer:
12
Step-by-step explanation:
(# of pencils)x(3/4)=9
(# of pencils)x(0.75)=9
(# of pencils)=9/(0.75)=12