As you arrived to Canada to continue your studies at CDE College, your first thought was to activate a Canadian telephone line on your mobile phone as it is essential for your daily life. Since you are on a student budget, you would like to make a choice between the following phone companies, each of which is offering you a different package for long distance calls, which you need in order to contact your family back home The first package includes a charge of 10 cents per minute of calling between India & Canada The second package will offer you up to 240 minutes of calls between India & Canada for a fixed monthly fee of $15. However, if you exceed the 240 minutes mark, you will have to pay 8 cents for every additional minute

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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As you arrived to Canada to continue your studies at CDE College, your first thought was to activate a Canadian telephone line on your mobile phone as it is essential for your daily life. Since you are on a student budget, you would like to make a choice between the following phone companies, each of which is offering you a different package for long distance calls, which you need in order to contact your family back home

The first package includes a charge of 10 cents per minute of calling between India & Canada

The second package will offer you up to 240 minutes of calls between India & Canada for a fixed monthly fee of $15. However, if you exceed the 240 minutes mark, you will have to pay 8 cents for every additional minute

The third plan offers you up to 510 minutes of calls between Canada & India for aa fixed monthly fee of 22$ and 5 cents per minute if you exceed the 510 minutes mark


In order to choose the package that best suits your needs, you decide to plot a graph of the total monthly cost of each package for different levels of monthly calls between Canada and India

Based on the graph you plotted, make the decision on which package is most suitable if:

  • If you expect to make a total of 100 minutes to your family in India
  • If you expect to make 240 minutes of calls
  • If you expect to make 540 minutes of calls
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