can A will fill a tub in 4.5 hours. can A and can B will fill a tub in y hours. if X represents how long it takes can B to fill the tub alone, which 2 equations represent this situation? A. 1/X=y4.5 b. 1/y+4.5=1/x C. 1/y-1/x=4.5 d.x+y= 4,5 e. 4.5 (x-y)=xy

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