Exercise $22\mathrm{.}6($Algo$)$ Evaluation of Responsibility Centers and Center Managers $($LO$22-1,$ LO$22-2)$

Shown as follows is a segmented income statement for Drexel$-$Hall during the current month:

$$Drexel$-$HallProfit CentersStore $1$Store $2$Store $3$Dollars$\%$Dollars$\%$Dollars$\%$Dollars$\%$Sales$ $2,085,000100\%$$ $695,000100\%$$ $695,000100\%$$ $695,000100\%$Variable costs$1,251,00060430,90062437,85063382,25055$Contribution margin$ $834,00040\%$$ $264,10038\%$$ $257,15037\%$$ $312,75045\%$Traceable fixed costs: controllable$500,40024139,00020118,15017243,25035$Performance margin$ $333,60016\%$$ $125,10018\%$$ $139,00020\%$$ $69,50010\%$Traceable fixed costs: committed$208,5001055,600876,4501176,45011$Store responsibility margin$ $125,1006\%$$ $69,50010\%$$ $62,5509\%$$ $(6,950)(1)\%$Common fixed costs$45,5002$Income from operations$ $79,6004\%$

All stores are similar in size, carry similar products, and operate in similar neighborhoods. Store $1$ was established first and was built at a lower cost than were Stores $2$ and $3.$ This lower cost results in less depreciation expense for Store $1.$ Store $2$ follows a policy of minimizing both costs and sales prices. Store $3$ follows a policy of providing extensive customer service and charges slightly higher prices than the other two stores.

Required:

Use the data given for Drexel$-$Hall to answer the following questions:

Assume that by spending an additional $$18,800$ per month in advertising a particular store, Drexel$-$Hall can increase the sales of that store by $10$ percent. What would be the additional contribution margin added by each store if given the additional advertising?