Answer:
$72,500
Explanation:
The computation of the amount of interest capitalized is as follows:
= ($500,000 × 12%) + ($625,000 - $500,000) × 10%
= $60,000 + $12,500
= $72,500
The Average expenditure for the year  is
= ($200,000 × 12 ÷ 12) +  ($600,000 × 8 ÷ 12)  + ($300,000 × 1 ÷ 12)
= $200,000 Â + $400,000 Â + $25,000
= $625,000