Answer:
Kathy will obtain a utility loss of 25 utils.
Step-by-step explanation:
The consumption of one more bottle of soda will cause the total utility to increase by
= 50 utils
However, in order to purchase an additional bottle of soda Kathy will need to sacrifice the consumption of three cheeseburgers.
The utility loss from giving up three cheeseburgers
= 75 utils
If Kathy consumes one more unit of soda her total utility will change by
= 50 - 75
= -25
So she will have a loss in total utility by 25 utils.