Answer:
$25,000
Step-by-step explanation:
success rate without attending the seminar = 3% x 5 calls per day x 5 days per week x 50 weeks per year x $2,000 sale = $75,000
success rate after attending the seminar = 4% x 5 calls per day x 5 days per week x 50 weeks per year x $2,000 sale = $100,000
the increase in sales dollars due to the increase in productivity (after attending seminar) = $100,000 - $75,000 = $25,000