Answer:
Given that,
Equilibrium price = $5.50
Equilibrium quantity = 39.0
![Elasticity\ of\ supply\ for\ dog\ food=((Change\ in\ quantity)/(average\ quantity) )/((change\ in\ price)/(average\ price) )](https://img.qammunity.org/2020/formulas/business/high-school/fzk4j245x1regz7fcur7hkpq09s4xex2vp.png)
![Elasticity\ of\ supply\ for\ dog\ food=((101-39)/(101+39) )/((7.75-5.50)/(7.75+5.50))](https://img.qammunity.org/2020/formulas/business/high-school/jcx5o5bcfwdrf14eyrfrbit8na6jrxds5n.png)
=
![(0.44)/(0.1698)](https://img.qammunity.org/2020/formulas/business/high-school/ij3of1m8vyq1y9n7fzoykm41ai51nyncqj.png)
= 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.