Answer: 1/2 lemonade for each popcorn
Step-by-step explanation:
Price of lemonade = $1.50
Price of popcorn = $0.75
Let good 1 = popcorn
Let good 2 = lemonade
MRS = MU1/MU2 = P1/P2
= 0.75/1.50
= 1/2
Therefore, the marginal rate of substitution will be 1/2 lemonade for each popcorn.
Therefore, the correct option is A.