Question

Part 1: A mobile phone service provider has three different data plans for its customers: Package A: For $39.99 per month 4 gigabytes are provided. Additional data costs $10 per gigabyte. Package B: For $59.99 per month, 8 gigabytes are provided. Additional data costs $5 per gigabyte. Package C: For $69.99 per month, unlimited data is provided. Write a program that calculates a customer's monthly bill. It should ask which package the customer has purchased and how many gigabytes were used. It should then display the total amount due. INPUT VALIDATION: Be sure the user only selects packages A, B or C. Modify the program in Part 1 so it also displays how much package A customers would have saved if they purchased packages B or C and how much money Package B customers would have saved if they purchased Package C. If there would be no savings, no message should be printed.

Answer 1

thanks for the question, here is a program with screenshot. I have tested for multiple test data and its working fine.

Here is the code with screenshot of a sample output

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packageA=(39.99,4,10)
packageB=(59.99,8,5)
packageC=69.99,

user_package=input('Enter package you are using \n[A] - Package A\n[B] - Package B\n[C] - Package C\n')
data_usage=float(input('How much gigabyes data was used: '))
if user_package in 'ABC':
    cost_C=cost_B=cost_A=0.0
    if data_usage>packageA[1]:
        cost_A=packageA[0]+(data_usage-packageA[1])*packageA[2]
    else:
        cost_A=packageA[0]
    if data_usage>packageB[1]:
        cost_B=packageB[0]+(data_usage-packageB[1])*packageB[2]
    else:
        cost_B=packageB[0]
    cost_C=packageC[0]
    if user_package=='A':
        print('Your monthly bill - PackageA ${0:.2f}'.format(round(cost_A,2)))
        if cost_B<cost_A:
            print('If you have used PackageB you would have saved: ${0:.2f}'.format(cost_A-cost_B))
        if cost_C<cost_A:
            print('If you have used PackageC you would have saved: ${0:.2f}'.format(cost_A-cost_C))
    elif user_package=='B':
        print('Your monthly bill PackageB ${0:.2f}'.format(round(cost_B,2)))
        if cost_A<cost_B:
            print('If you have used PackageB you would have saved: ${0:.2f}'.format(cost_B-cost_A))
        if cost_C<cost_B:
            print('If you have used PackageC you would have saved: ${0:.2f}'.format(cost_B-cost_C))
    elif user_package=='C':
        print('Your monthly bill PackageC ${0:.2f}'.format(round(cost_C,2)))
        if cost_A<cost_C:
            print('If you have used PackageA you would have saved: ${0:.2f}'.format(cost_C-cost_A))
        if cost_B<cost_C:
            print('If you have used PackageB you would have saved: ${0:2f}'.format(cost_C-cost_B))

else:
    print('You have entered an invalid package')

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thanks !!