Answer:
2,030,000 grams
Step-by-step explanation:
total need = budgeted unit sales + desired ending finished good inventory
 = 630,000 + 78,000
 = 708,000
Required production in units = total needs - beggining goods inventory
= 708,000 - 28,000
= 680,000
 total raw materials needed = Raw materials required for production (3*Required production in units) + desired ending finished goods inventory 
= 3*680,000 + 48,000
=2,088,000
required raw material purchases in grams = total raw materials needed - beggining fineshed good inventory
= 2,088,000 - 58,000
= 2,030,000
Therefore, The raw material that the company pshould purchase during the year is 2,030,000 grams