Answer:
The correct option is c.$30
Explanation:
In this question, we use the formula of the consumer surplus. The formula is shown below:
Consumer surplus = maximum price willing to pay - actual price
So,
For Jena, the consumer surplus would be equal to
= $75 - $65
=$10
For Jane, the consumer surplus would be equal to
= $85 - $65
=$20
So, the total consumer surplus would be
= Jena consumer surplus + Jane consumer surplus
= $10 + $20
= $30
Hence, the combined amount of consumer surplus for Jena and Jane is $
30
Therefore, the correct option is c.$30