GMAT/留學申請專業顧問 Donz 之資訊交流園地

5. [DS] Warehouse W's revenue from the sale of sofa was what percent greater this year than it was last year?
     1) W sold 10 percent more sofas this year than it did last year
     2) W's selling price per sofa was $30 greater this year than it was last year

Solution:

     GMAT 的 Profit = Revenue - Cost
     這題沒有 Cost 所以不考慮太多
     Revenue = Sales Number x Price

     (1) 答案沒有做 Price 的比較 不選
     (2) 答案沒有 Sales Number 的比較 也不選

     (1) + (2) 有 Sales Number 的比例
     但沒有 Prices 的比例  $30 greater
     並沒有基準點 所以我們不考慮

     答案 (E)