Answer: Total consumer surplus is $27
We calculate Consumer Surplus as follows:

We calculate Consumer Surplus for each person
Person Price Willing Actual Price Consumer Surplus
John 30 20
Susie 28 20 
Joseph 25 20 
Jessica 23 20 
<u>Jeremy 21 20
</u>
<u>Total Consumer Surplus 27 </u>
The reserve requirement is a central bank regulation
True hope this is correct
A customs duty is best described as a B.) TAX PAID ON IMPORTED GOODS.
This tax is levied to increase the state revenue as well as protect domestic businesses that are of the same industry as those imported goods.