please answer all questions

1-Calculate the cost of goods sold knowing that the beginning inventory was $ 150000-ending inventory was 30000, purchases during the process $18000- supplies for $ 10000-labor cost $21000 (25 MARKS ) 2-WILAT ARE THE TYPES OF INVENTORY ? GIVE EXAMPLES OF YOUR OWN AND WIIY DO WE CONSIDER THE INVENTORY COSTS ? ( 25 MARKS) 3-Calculate the cost of goods manufactured from the following data : Direct materials used $190000- direct manufacturing labor $85000- beginning work in process manufacture $21000-$26000 ending work in process ( 25 MARKS ) 4-Calculate the operating income from the following data : Sales revenue $350000-beginning inventory $41000-ending inventory $38000-cost of goods manufactured S 46000, marketing expenses $33000-( 25 MARKS)