## Car Trip 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 ?