## Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

### Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

# Swift Enums and Structs

I'm stuck on this last challenge and I need some help, Challenge Task 4 of 4

We need to figure out the tax amount when the tax percentage is 7.5 percent. Call the method calculateTaxes on the variable item and assign the result to a new variable named taxes.

struct.swift
```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)
}

}
var item = Expense(description: "car")
item.amount = 100
```

Hello : Sorry I am not looking at the challenge and trying it out myself, but I will try to help you with what I can see the challenge is asking you for.

```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)
}

}

var item = Expense(description: "car")
item.amount = 100
var taxes = item.calculateTaxes(7.5) // Here

// we are calling the method and assigning it to a variable
// called taxes
```

Try this out, and please let me know if that works for you.