Consider the market for orange juice. Suppose two events occurred last week. During the course of this past week, the price of oranges (used in the production of orange juice) decreased. At the same time, the price of coke (a substitute for orange juice) doubled. What are the likely effects of these TWO events on the equilibrium quantity Q* and price P* of orange juice

these two events would lead to an increase in equilibrium quantity and have an indeterminate effect on equilibrium price

Explanation:

As a result of the decrease in the price of oranges which is use in the production of orange juice, there would be a rightward shift of the supply curve for orange juice. A a result,  the supply of orange juice would increase and price of orange juice would fall

Substitute goods are goods that can be used in place of another good.

The doubling of the price of coke would lead to a decrease in the demand for coke and an increase in the demand for orange juice. This would shift the dead curve for orange juice to the right. As a result,  both equilibrium price and quantity increases

these two events would lead to an increase in equilibrium quantity and have an indeterminate effect on equilibrium price

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