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# not understanding why this isn't passing....

This does not produce any errors in Xcode, but I keep getting a bummer message

func temperatureInFahrenheit(temperature: Double)-> Double { var fahrenheit = ((temperature * 9)/5 + 32) return fahrenheit }

let fahrenheitTemp = temperatureInFahrenheit(24.0)

functions.swift
```// Enter your code below
func temperatureInFahrenheit(temperature: Double)-> Double {
var fahrenheit = ((temperature * 9)/5 + 32)
return fahrenheit
}

let  fahrenheitTemp = temperatureInFahrenheit(24.0)
```

You've got an extra space between `let` and `fahrenheitTemp`... I guess that little thing will prevent the task from completing.

It's weird... Something that small shouldn't matter, especially since it doesn't matter in Xcode...

Hi Eli,

I tried it your way in Xcode and it worked fine, as you said, but I declared `fahrenheit` as a constant (`let`) rather than a variable (`var`) and removed a set of parentheses from your equation. Like so:

```func temperatureInFahrenheit(temperature: Double) -> Double {
let fahrenheit = (temperature * 9) / 5 + 32
return fahrenheit
}

let  fahrenheitTemp = temperatureInFahrenheit(24.0)
```

This seemed to work for me in both Xcode and the Code Challenge. Xcode advised that because we don't really do anything else with the value assigned to the `fahrenheit` variable apart from manipulate our function argument, it can be safely declared as a constant, which is why I changed it. I also think that the order of operations in Swift allows you to dispense with one of the sets of parentheses you used.

Sometimes, I've noticed that the in-browser simulators can lag behind and will sometimes need a page refresh or even a browser restart, but this passed fine for me. Good luck!

You can even get rid of the constant completely and just

```return (temperature * 9) / 5 + 32
```