Arock-climbing school faces two demand curves. the demand by local residents is q = 400 – 0.5p, and the demand by others is q = 500 – 0.5p. the marginal cost of serving either local or nonlocal residents is constant at $100. if the rock-climbing school cannot practice third-degree price discrimination and must charge a single price to all customers, it will charge: $375. $400. $800. $500.

Lauer corporation uses the periodic inventory system and has provided the following information about one of its laptop computers: date transaction number of units cost per unit 1/1 beginning inventory 210 $ 910 5/5 purchase 310 $ 1,010 8/10 purchase 410 $ 1,110 10/15 purchase 255 $ 1,160 during the year, lauer sold 1,025 laptop computers. what was cost of goods sold using the lifo cost flow assumption?