The table below shows total output for an economy over 2 years.
2012 Price Quantity
Good A $1.00 100 units
Good B $2.00 200 units
Good C $5.00 100 units
2013 Price Quantity
Good A $2.00 120 units
Good B $3.00 200 units
Good C $10.00 98 units
7)the implicit GDP deflator in 2013, when 2012 is used as the base year, was approximately
A) 105. B) 203. C) 193. D) 160. E) 180.
怎么做呢?