Answer:
Results are below.
Explanation:
To calculate the purchases for each month, we need to use the following formula:
Purchases (units)= sales + desired ending inventory - beginning inventory
January (units):
Sales= 140,000
Desired ending inventory= (140,000*0.3)= 42,000
Beginning inventory= (60,000)
Total number of units= 122,000
Total cost= 122,000*4= $488,000
February (units):
Sales= 140,000
Desired ending inventory= (200,000*0.3)= 60,000
Beginning inventory= (42,000)
Total number of units= 158,000
Total cost= 158,000*4= $632,000
March (units):
Sales= 200,000
Desired ending inventory= (200,000*0.3)= 60,000
Beginning inventory= (60,000)
Total number of units= 200,000
Total cost= 200,000*4= $800,000
April (units):
Sales= 200,000
Desired ending inventory= (160,000*0.3)= 48,000
Beginning inventory= (60,000)
Total number of units= 188,000
Total cost= 188,000*4= $752,000
May (units):
Sales= 160,000
Desired ending inventory= (220,000*0.3)= 66,000
Beginning inventory= (48,000)
Total number of units= 178,000
Total cost= 178,000*4= $712,000