An economy starts out in short-run and long-run equilibrium. if both short-run and long-run aggregate supply increase, so that the economy remains in equilibrium:

Swain company manufactures one product, it does not maintain any beginning or ending inventories, and its uses a standard cost system. the company's beginning balance in retained earnings is $65,000. it sells one product for $170 per unit and it generated total sales during the period of $603,500 while incurring selling and administrative expenses of $54,500. swain company does not have any variable manufacturing overhead costs and its standard cost card for its only product is as follows: