$19$ net pounds of direct materials are used to elaborate $100$ units with a cost of $$7\mathrm{.}25$ per pound. The production method converts $95\%$ of direct materials into the final product. Therefore, there is a waste of $5\%.$

For a given period, production of $7,350$ units was achieved using $1,510$ pounds of direct materials with a cost of $$7\mathrm{.}15+1\%$ transportation cost

Question: Solve for the change in quantity under standard cost