Answer: 1 gallon costs 0.40 $
Step-by-step explanation: 6 gallons / 15$ = 0.4 gal/$
 
        
             
        
        
        
The answer you are looking for is B. 15
        
                    
             
        
        
        
Answer:
given,
mp= 4500
now
discount amount=dis%of mp
 =x%of 4500
 =45x
now,
sp=mp- discount
 =4500-45x
now, 
vat=vat%of SP
 =10%*4500-45x
 =450-45x
now,
sp with vat=sp+vat amount
 =4500-45x+450-45x
 =4950-90x
 now, 
4950-90x=4400
or,-90x=-550 
or, x=55/9
or, x=6.11%
therefore, dis percent is 6.11%