1. Word Problems: Variables on Both Sides Chapter 4.2 Part 2

2. Define a variable, write an equation and solve. Josh and Carl are driving the same distance. Josh drives at 50 mph and Carl drives at 60 mph. If it takes Josh 1 hour longer than Carl, how long does each drive? What you should know: Distance = (Rate)(Time) Variable (Unknown): Time x = time it takes Carl to drive the distance x + 1 = time it takes Josh to drive the distance

3. Josh and Carl are driving the same distance. Josh drives at 50 mph and Carl drives at 60 mph. If it takes Josh 1 hour longer than Carl, how long does each drive? D = rt Josh: D=(50)(x+1) Carl: D=(60)(x) Since they went the same distance, we can set the two equations equal to each other. 50(x+1) = 60(x)

4. Solve: 50(x+1)=60(x) 50(x+1)=60(x)Distribute 50x+50=60xMove variables -50x -50x 50 = 10xDivide by the number that is in front of the variable. x = 5

5. What does x = 5 mean? x = time it takes Carl to drive the distance. x = 5, it takes Carl 5 hours to drive the distance. If it takes Josh 1 hour longer: it take Josh 6 hours

6. Mini-Worksheets If you write on a separate paper, please don’t write on the worksheet, so that I can reuse it. Try two of the word problems and 10 of the other problems. Any extras=extra credit

7. Homework: pg 166-168 (22-30 all, 32, 34, 35, 59-67 odds )