Answer:
$15
$35
Step-by-step explanation:
Calculation to Determine the consumer surplus from the original purchase and the additional surplus generated by the resale of the cannon
Consumer surplus from the original purchase=$45-$30
Consumer surplus from the original purchase=$15
Additional surplus generated by the resale of the cannon=$80-$45
Additional surplus generated by the resale of the cannon=$35
Therefore the consumer surplus from the original purchase is $15 and the additional surplus generated by the resale of the cannon is $35