Determine the exact value of 
when 
and 
< 0.
Definitions:
Pocket Money
Usually small amounts of money given to children by their parents on a regular basis.
Hard Candies
Small, flavored sugar candies that are solid at room temperature, often sucked rather than chewed.
Marginal Utility
The additional satisfaction or utility that a person receives from consuming an additional unit of a good or service.
Utility-Maximizing Amounts
Quantities of goods and services consumers choose in order to reach the highest level of satisfaction.
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