equilibrium quantity would increase
there would be an indeterminate effect on equilibrium price
Explanation:
Due to the increase in popularity of the tea, the demand for the tea would rise. This would lead to a rightward shift of the demand curve. Equilibrium price and quantity would rise.
If taxes are reduced, the cost of producing tea would reduce. This would encourage producers to start making tea. As a result, the supply of tea would increase. This would lead to a rightward shift of the supply curve for tea. As a result, equilibrium price would fall and equilibrium quantity would increase.
Taking these two effects together, there would be an increase in equilibrium quantity and there would be an indeterminate effect on equilibrium price