Syllabus Lesson 8 of 239 · Python Foundations
Python Foundations

Mini-Project: Tip Splitter

Time to combine everything: numbers, math, rounding, and functions. You will build a tiny tool that figures out how much each person owes for a meal once a tip is added.

The plan

Given the bill total, the number of people, and a tip_percent (like 20 for twenty percent), the per-person amount is:

  • Add the tip: total + total * (tip_percent / 100). A 20 percent tip on 100 gives 120.
  • Split it: divide by people.
  • Round to cents with the built-in round(value, 2), which keeps 2 decimal places.
grand = 100 + 100 * (20 / 100)   # 120.0
print(grand / 4)                 # 30.0
print(round(31.666, 2))          # 31.67

Wrapping it in a function means you can reuse it for any bill, and the auto-grader can check it with different numbers.

Your turn

Write a function bill_split(total, people, tip_percent) that adds the tip to total, splits the result evenly among people, and returns the per-person amount rounded to 2 decimal places with round(..., 2). For example bill_split(100, 4, 20) should return 30.0, and bill_split(50, 3, 10) should return 18.33. After defining it, print bill_split(100, 4, 20).

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