Will and Grace have adjoining unfenced back yards and each has just adopted a new puppy. Will values a fence between their yards at $250 and Grace values a fence between their yards at $200. The cost of building the fence is $300, which will be split equally if they both agree to build the fence. Therefore, their payoff matrix is as follows. 
If Will decides to build the fence, then Grace will earn a higher payoff by ______, and if Will decides to not build the fence, then Grace will earn a higher payoff by ______.
Definitions:
Dollar-Euro Exchange Rate
The value of one U.S. dollar in terms of the European Union's euro, reflecting the relative strength of the two economies and impacting international trade and finance.
Surplus of Euros
The condition where the supply of Euros exceeds the demand in the foreign exchange market.
Flexible Exchange Market
A system where the value of a currency is allowed to fluctuate according to the foreign exchange market.
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