Answer:
Decrease by $30,000
Explanation:
Cost to buy = 15,000 * $34
Cost to buy = $510,000
Note: Since Ortega is buying 15000 units at $34, the $40,000 avoidable cost on fixed manufacturing overhead is non-applicable.
Cost of making = $150,000 + $240,000 + $90,000
Cost of making = $480,000
So, if Ortega purchases the component from the supplier instead of manufacturing it, the effect on income would be decrease by $30,000 ($510,000-$480,000).