用生产法计算gdp(GDP＝∑各产业部门的总产出－∑各产业部门的中间消耗),如题(担心翻译有偏差,所以直接把题放上来):
use the information below to calculate the value added by the firm.
rent paid for office space:$80,000
wages paid to workers:$300,000
Value of produced inputs used up to produce the firm's output that were purchased from other firms:$200,000

Total value of the firm's output:$680,000 正确答案:$480,000
我不理解为什么不减去"rent paid for office space"? rent 应该不是firm的output吧?
谢谢~~~