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 ?