Answer:
$23
Step-by-step explanation:
Calculation for how much total value was created in this exchange
First step is to calculate Deltra Surplus
Using this formula
Surplus (Deltra)=Purchase value - Agreed Price
Let plug in the formula
Surplus(Deltra)=$50−$31
Surplus(Deltra)=$19
Second step is to calculate Deirdre Surplus using this formula
Surplus (Deirdre)= Agreed Price - Amount Willing to sell
Let plug in the formula
Surplus(Deirdre)=$31−$27
Surplus(Deirdre)=$4
Now let calculate the total value that was created in this exchange
Total value=$19+$4
Total value=$23
Therefore the amount of total value that was created in this exchange is $23