Plasto incorporated manufactures and sells arboxal, a chemical used in the manufacture of plastic. To produce arboxal, Plasto uses three direct materials arcol, bonal and oxal Because of evaporation during a chemical reaction in the production of arboxal. Plasto expects a standard yield of $90\%.$ That is$,$ every $10$ gallons of arcol, bonal, and oxal yields

$9$ gallons of arboxal. The standard mix of direct materials is $60\%$ of arcol, $20\%$ of bonal, and $20\%$ of oxal. Plasto set the following direct material standards for the production of arboxal.

$\backslash$table$[[6,$gallons of arcol at $$\frac{1\mathrm{.}00}{?}$ gallon,$$6\mathrm{.}00$