1. Shantel rows a boat downstream for 96 miles. The return trip upstream took 16 hours longer. If the current flows at 4 mph, how fast does Shantel row in still water? 2. Kelly went on a 90 mile trip to a soccer game. On the way back, due to road construction she had to drive 15 miles per hour slower. This made the trip take 1 hour longer. How fast did she drive to the soccer game?

3. A farmer bought a number of pigs for $180. However, 4 of them died before he could sell the rest at a profit of 2 per pig. His total profit was $28. How many pigs did he originally buy?