2003 2004
Model A 190 175
Model B 200 205
Model C 210 220

The table above shows quantities for various models of mobile phones sold by a retailer. Assuming prices did not change between 2003 and 2004, was the total revenue from sales in 2004 greater than the total revenue in 2003?
(1) Model A is the most expensive phone.
(2) Model C is the least expensive phone.

How do we solve such questions under 2 minutes?

-treker