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The slope of the PPF at a given point is the amount of good 'A' that would have to be sacrificed to get an additional unit of good 'B" That is the opportunity cost of getting an extra unit of good 'B' It bulges outwards (it is concave) because of the increasing opportunity cost If the slope is lineaar (straight) the opportunity cost will be constant and no sacrifice will be made. Three results can result from the PPF these are..

1) Unattainable

2) Attainable and efficient

3) Attainable but inefficient

Innefiency refers to when TB (total benefit) mines TC (tolat cost) is not maximised.

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Q: Why does the shape of the ppf slope downwards to the right and bulge out?
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