Answer:
Given that,
Equilibrium price = $5.50
Equilibrium quantity = 39.0
[tex]Elasticity\ of\ supply\ for\ dog\ food=\frac{\frac{Change\ in\ quantity}{average\ quantity} }{\frac{change\ in\ price}{average\ price} }[/tex]
[tex]Elasticity\ of\ supply\ for\ dog\ food=\frac{\frac{101-39}{101+39} }{\frac{7.75-5.50}{7.75+5.50}}[/tex]
= [tex]\frac{0.44}{0.1698}[/tex]
= 2.5912
(b) For same % Increase in price, increase in quantity supplied for cat food is less than the increase in quantity supplied of dog food, therefore Cat food is less elastic than dog food.