Multiple Choice
If Helen can paint one room in the time it takes her to bake 40 cakes and Josh can paint one room in the time it takes him to bake 60 cakes,Helen's opportunity cost of baking one cake is:
A) painting one room.
B) painting 1/40 of a room.
C) painting 1/60 of a room.
D) painting 2/3 of a room.
E) painting 3/2 of a room.
Correct Answer:

Verified
Correct Answer:
Verified
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