Answer
In Units: Target Ending Inventory (72,000 wheels) - Beginning Inventory (55,000 wheels) = 17,000 wheels
In Yen: Budgeted Purchase Price (¥18,000 per wheel) $\times$ Budgeted Purchases in Units (17,000 wheels) = 306,000,000 yen
Work Step by Step
In Units: Target Ending Inventory (72,000 wheels) - Beginning Inventory (55,000 wheels) = 17,000 wheels
In Yen: Budgeted Purchase Price (¥18,000 per wheel) $\times$ Budgeted Purchases in Units (17,000 wheels) = 306,000,000 yen