At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?
1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70
2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10
This is such a classic GMAT question. It preys on our instinct to mark E by assuming that both conditions reduce to the same equation, not realizing that we don't
really need the price of each poster or map.
Hindsight 20/20 though!