Answer:
Overheads Applied = $712,500
Overheads Under-applied = $762,500
Explanation:
Predetermined Overhead rate = Estimated Annual Overhead ÷ Estimated machine hours
                          = $1,500,000 ÷ 400,000
                          = $3.75
Applied Overheads = Predetermined Overhead rate × Actual Machine hours
                 = $3,75 × 190,000
                 = $712,500
If Actual Overheads > Applied Overheads, we say we have under-applied overheads
and
If Actual Overheads < Applied overheads, we say we have over-applied overheads
In this case :
Actual Overheads = $1,475,000
Applied Overheads = $712,500
Therefore we have under-applied situation of $762,500 ($1,475,000 - $712,500)