PYTHON PROBLEM 063 · Starter

Calculate tax with an optional rate: Standard tax

Calculate a bill using the standard 18 percent rate.

default argument · functiondefault argumentfunction

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests calculate tax with an optional rate. It belongs to the Functions and Program Design roadmap and uses the default argument · function pattern.

Parameters, return values, default and keyword arguments, scope, decomposition, and reusable code.

COMPLETE WORKSPACE

Learn the plan, trace the logic and run the solution

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SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens default argument · function. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.