FPL Technologies interview question

Q1. Refactor below code to remove if-else logic by applying clean coding and design principle. public double calculateInsurance(double income) { if (income <= 10000) { return income*0.365; } else if (income <= 30000) { return (income-10000)*0.2+35600; } else if (income <= 60000) { return (income-30000)*0.1+76500; } else { return (income-60000)*0.02+105600; } } Q2. Create a screen which hits an api to show data in the list form. Try to write code with clean and objective coding structure.