Answer:
Answered
Step-by-step explanation:
a)Even at twice the original price, the marginal utility per dollar of the 20th train trip may be higher than the corresponding ratio for any other good that Ann might consume, in which case she would be perfectly rational not to alter the number of trips she takes.
After all, missing a trip would be to miss a whole day’s work.
b.) meals.
The higher price of train tickets makes Ann poorer. The income effect of the price
increase is what leads to the reduction in the number of restaurant meals she eats.