Answer:
The amount of paint used in the birdhouse = (1/4) of paint
Explanation:
The amount of paint used in first go = 3/8
The amount of pain used in second go = 1/4
The amount of paint used in bird house = k
The amount paint left = 1/8
Now, according to the question:
Paint used in ( First go + second go + Birdhouse) + Paint left = 1 can Paint
⇒

or, The amount of paint used in the birdhouse = (1/4)