The figure given below shows the national market for mopeds in a country. Dd and Sd are the domestic demand and supply curves of mopeds respectively. 
Calculate the welfare loss arising from the production effect of the tariff.
Definitions:
Invalid Premise
A statement or assumption that is incorrect or flawed, which can undermine the validity of an argument.
Categorical Syllogisms
A kind of syllogism where the argument is based on the inclusion and exclusion of categories or groups.
Possible Figures
In syllogistic logic, refers to the different valid arrangements of the major, minor, and middle terms in syllogisms.
Categorical Syllogisms
A kind of logical argument that involves two premises and a conclusion, each statement beginning with "all", "no", or "some", referring to the relationships between categories.
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