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if 18=x/10000 then x=?

I need to determine the value of a missing factor.

I know the calculation that provides the rate: 

Rate= Count/(Gallons/10000)

I am given the rate and the count or

3.028139= 12 /( x /10000)

I need to determine the number of gallons or vlaue of X

Any help would be appreciated.

 

 

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Theresa C. | Dedicated, Patient Math TutorDedicated, Patient Math Tutor
4.9 4.9 (152 lesson ratings) (152)
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R = C/(X/1000)  Solve for X
R = C (1000/X)  multiply by the reciprocal
R = 1000C/X
RX = 1000C  Multiply both sides by X.
X = 1000C/R
 
X = (1000)(12)/3.028139
 
X =  3,962