Answer:
$70,000
Step-by-step explanation:
Producer surplus is the difference between the price of a good and the least price the seller is willing to sell the product
Producer surplus = price – least price the seller is willing to accept
least price =cost of production = 150,000 + 40,000 + 20,000 = 210,000
280,000 - 210,000 = 70,000