SOLUTION: solve
an air pump and a gang valve for an aquarium cost $31. The air pump costs 1 dollar less than 3 times the cost of the gang valve. Find the cost
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an air pump and a gang valve for an aquarium cost $31. The air pump costs 1 dollar less than 3 times the cost of the gang valve. Find the cost
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Question 19708: solve
an air pump and a gang valve for an aquarium cost $31. The air pump costs 1 dollar less than 3 times the cost of the gang valve. Find the cost Answer by Paul(988) (Show Source):
You can put this solution on YOUR website! Let 3x-1 represent the cost on air pump in dollars
Let x represent the cost of valve in dollars
x+(3x-1)=31
4x-1+1=31+1
4x=32
x=8
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