Answer: The marginal rate of substitution is 5
Explanation: Marginal rate of substitution (MRS) is the rate at which a consumer can give up some amount of one good in exchange for another good while maintaining the same level of utility.The marginal rate of substitution for goods x for goods y is:
Price of goods (x) divided by price of goods(y). That is,
MRSxy= (Px / Py)
MRSxy= 25 / 5
MRSxy= 5.