Question

Write a program in python to calculate the amount each person must pay toward the bill and toward the tip, for a group of friends who are eating out together. Since you are all friends, it is okay to split the costs evenly.

Your program should take as input:

1. The restaurant bill (without tax or tip) as a floating point number
2. The sales tax rate as a floating point number (for example: an 8% tax rate would be 0.08)
3. The level of service as an integer between 0 and 10
   0 is terrible (0% tip), 5 is average (15% tip), and 10 is excellent (30% tip)
4. The number of friends to split the check among

Your program should output:

1. The amount each friend should pay toward the bill (with tax)
2. The amount each friend should leave in tip
   tip should be calculated on the pre-tax restaurant bill
3. The total amount each diner should pay, including restaurant bill, sales tax, and tip
4. The overall total, which includes the restaurant bill, the sales tax, and the tip

For example, with the following inputs:

Restaurant bill (without tax or tip): $35
Sales tax rate: 0.08
Level of service: 7
Number of friends: 3

the output should be:

Bill per person with tax: $12.6
Tip per person: $2.4499999999999997
Total per person: $15.049999999999999
Total bill including tax and tip: $45.15 

Note that because floating point values often incur rounding errors, the output might not be completely accurate. This will not affect the grading. However, please make your input and output look like the example above, so that the automated system can evaluate your results.

Things to think about when you’re writing these programs:

1. Follow the recipe: collect all your input first; then calculate the required results; then output the results.
2. Spend some time choosing your variable names carefully. Names should be descriptive.
3. Take advantage of variables to name values whose purpose may not be obvious.
4. Take advantage of variables by breaking any complex expressions down into a set of simpler expressions and storing the intermediate results in variables

Answer 1

PYTHON CODE:

# Input part
billWithoutTax = float(input('Restaurant bill (without tax or tip): $'))
taxRate = float(input('Sales tax rate: '))
serviceLevel = int(input('Level of service: '))
numOfFriends = int(input('Number of friends: '))

# Calculation part
billWithTax = billWithoutTax + billWithoutTax*taxRate
billPerPersonWithTax = billWithTax/numOfFriends
totalTip = billWithoutTax*serviceLevel*3/100
tipPerPerson = totalTip/numOfFriends
totalPerPerson = billPerPersonWithTax + tipPerPerson
totalBillWithTaxTip = totalPerPerson*numOfFriends

# Output part
print('Bill per person with tax: $', billPerPersonWithTax)
print('Tip per person: $', tipPerPerson)
print('Total per person: $', totalPerPerson)
print('Total bill including tax and tip: $', totalBillWithTaxTip)

SAMPLE OUTPUT: