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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Jordan Nilsson
Jordan Nilsson
1,409 Points

How do I complete the last task of this challenge?

I don't know how to complete the last task of this challenge.

struct Expense {
    var description: String
    var amount: Double = 0.0

    init (description: String) {
        self.description = description

    func calculateTaxes(percentage: Double) -> Double  {
        return (self.amount*(percentage/100))

    // add the calculateTaxes method here
    // it should accept only one parameter named 'percentage' of type Double


var item = Expense(description: "Hello")
item.amount = 100
var taxes = calculateTaxes(amount: 7.5)

2 Answers

Roberto Alicata
Roberto Alicata
Courses Plus Student 39,959 Points

In the last step the challenge asked to "Call the method calculateTaxes on the variable item" and assign the result to a new variable named taxes."

simply write this:

var taxes = item.calculateTaxes(7.5)