Car Trip
      
      
        Download Source Code
      
      
      
       Practice
      
      
        - Download the program above.  Change the value 100 until the
          Total Distance is 800 km.
          The result is the speed required for Roy to reach Vienna in 7 hours.
         
        - Change the program so that all the numbers are represented by
          variables.  For example:
             Times as  t1 , t2 , t3 ,  Speeds as  s1 ,
          s2 , s3
          Now change the program to represent a trip where he drove 3 hours at
          100 km/hr , then 1½ hours at 80 km/hr,
          and then 2 hours at 120 km.  Then figure out how long the 3rd
          part of the trip must be to reach 800 km. 
        - Write a program that can calculate the total price of the following
          items:
              3 shirts at 29.50 each
              2 pairs of pants at 59.00 each
              4 CDs at 19.50 each
              Calculate the total, then add 15% sales tax 
        - Write a program that adds up 10 numbers and calculates the average
 
        - Use the 10 number average program to answer the following question:
          If the prices of 9 items are 10, 12, 15, 20, 21, 23, 28, 35, and 50, 
          what is the price of a 10th item that will make the overall average
          exactly 25.00 ?