Two retail stores with very different products and target customers have operated separately in the local mall for the past 10 years. This year, Kevin, the owner of Blue, bought out the owner of Kingbird, with full intentions of keeping both stores in their current locations and running them the same as before. The only difference is that now the two stores will share a breakroom for the employees-before, each store had its own breakroom. At the end of this year, Kevin recognized the total cost of the breakroom to be $3,000 for the year. He allocates $1,260 to Blue using the stand-alone method. (a) If the total cost of the two breakrooms amounted to $3,900 last year, how much breakroom cost did each store incur last year