S Equivalent Utility gains The dollar equivalent net utility gain for the 1st gallon is S( - pG) and is $(r2-p) for the 2nd gallon, c and so on so the dollar value of the gain-to-trade is $(r1-po)+$(r2-po)+ for as long as rn -pG>0.◆The dollar equivalent net utility gain for the 1st gallon is $(r1 - pG) ◆and is $(r2 - pG) for the 2nd gallon, ◆and so on, so the dollar value of the gain-to-trade is $(r1 - pG) + $(r2 - pG) + … for as long as rn - pG > 0. $ Equivalent Utility Gains