1. Uncle Wang sold 20 identical umbrellas today, of which 15 umbrellas were 20% more expensive than the purchase price, and the other five umbrellas were sold at a price 20% lower than the purchase price. Did Uncle Wang make money or lose money today?

2. It takes 10 hour to complete section A and 8 hours to complete section B.. What is the speed ratio of the two cars?

Grandpa Li surrounded a rectangular vegetable field with a 64-meter-long fence, with an aspect ratio of 9: 7. What is the area of this land?