please answer all

6. The following units of an inventory item were available for sale during the year: Beginning inventory 10 units at $55 First purchase 25 units at $60 Second purchase 30 units at $65 Third purchase 15 units at $70 The firm uses the periodic FIFO inventory system. During the year, 60 units of the item were sold. What is the amount of ending inventory. $1,250 $1,350 $1,375 1,150 7. Which inventory method is going to yield the highest net income in a period of rising costs? Average Cost FIFO LIFO None of the above 8 . The following lots of a particular commodity were available for sale during the year: Beginning inventory 5 units at $61 First purchase 15 units at $63 Second purchase 10 units at $74 Third purchase 10 units at $77 There are 20 units of the commodity on hand at the end of the year. What is the amount of cost of merchandise sold for the year according to the average cost method? $1,250 $1,375 $1,380 $1,400 9. What accounting principal is violated if a company changes from FIFO to LIFO every year. cost principal matching principal consistency principal none of the above 10. A system of communicating information for better decision making is known as bookkeeping accounting finance none of the above