Day 2 Problems 102408

1
Day 2 Problems 10/24/08

• The length of a rectangle is 9 in. more than its
  width. The perimeter of the rectangle is 30.
  What are the width and length of the rectangle?
• The width of a rectangle is one half its length.
  The perimeter is 54 cm. What are the width and
  the length of the rectangle?
• The sum of the two consecutive integers is -35.
  Find the integers.
• The sum of two consecutive even integers is 118.
  Find the two even integers.
• The sum of two consecutive odd integers is 56.
  Find the two odd integers.

2
Distance Rate Time Problems

• Uniform motion when an object moves at a
  constant rate.
• Distance-Rate-Time
• d r t
• Distance d, rate r, time t

3
Same-Direction Travel

• A train leaves a train station at 1 p.m. It
  travels at an average rate of 60 mi/h. A
  high-speed train leaves the same station an hour
  later. It travels at an average rate of 96 mi/h.
  The second train follows the same route as the
  first train on a track parallel to the first. In
  how many hours will the second train catch up
  with the first train?
• Define Let t the time the first train travels
• Then t 1 the time the second train
  travels
• Relate

4
Same-Direction Travel

• Write 60t 96 (t 1)
• 60t 96t 96
• -96t -96t
• -36t -96