Given that Total cost = $500,000
Fixed cost = $300,000
Then variable cost is given by
Variable cost = (Total cost) - ( Fixed cost ) = $500,000 - $300,000 = $200,000
Given that 59,000 units are produced for that variable cost.
that means variable cost of 59000 units = 200000
Then variable cost of 1 unit = 200000/59000= 3.38983050847
Hence answer is approx $3.39 per unit.