Answer
a) 180 dollars
b) Farmer's value added is 100 dollars, miller's value added is 50 dollars, and the baker's value added is 30 dollars.
c) The total value added is 180 dollars, the same as the GDP.
Work Step by Step
a) The bread is the final good produced in the economy.
c) Another way to compute the GDP is to add up the total value added of the other goods in the economy.