Can anybody help me answer these?

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Serene Stereos has the following inventory data: Nov. 1 Inventory 8 Purchase 17 Purchase 25 Purchase 26 units @ $5.30 each 106 units @ $5.70 each 53 units @ $5.55 each 79 units @ $5.80 each A physical count of merchandise inventory on November 30 reveals that there are 88 units on hand. Cost of goods sold under FIFO is Dole Industries had the following inventory transactions occur during 2017: Feb. 1, 2017 Mar. 14, 2017 May 1, 2017 Purchase Purchase Purchase Units 103.0 177.0 125.0 Cost/unit $103.0 $107.0 $112.0 The company sold 291.0 units at $144.0 each and has a tax rate of 30%. Assuming that a periodic inventory system is used, and operating expenses of $2850.0, what is the company's after-tax income using LIFO? (rounded to whole dollars) Hogan Industries had the following inventory transactions occur during 2017: Cost/unit $56 Feb. 1, 2017 Mar. 14, 2017 May 1, 2017 Purchase Purchase Purchase Units 134 231 164 $58 $61 The company sold 379 units at $78 each and has a tax rate of 30%. Assuming that a periodic inventory system is used, what is the company's gross profit using LIFO?(rounded to whole dollars)