Tim mows the yard for his neighbors. he spends $1 on gas and charges them $20 for each lawn he mows. what's the total contribution to gdp each time tim mows a yard?

$ 20

Explanation:

Given:

Amount spent on gas = $ 1

Charges for the mows = $ 20

Total contribution to the GDP every time the Tim mows the land will be $ 20.

This is because the GDP includes the final charges only or the expenditures of the final goods. The intermediate spending or the intermediate costs are not included in the GDP  

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