Janitor supply produces an industrial cleaning powder that requires 40 grams of material at $0.10 per gram and .25 direct labor hours at $12.00 per hour. overhead is assigned at the rate of $18 per direct labor hour. what is the total standard cost for one unit of product that would appear on a standard cost card? $7.00. $8.50. $11.50. $7.50. $25.00.