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# Math challenge is not Working!

Hello

In the math challenge section, I wrote the code correctly as below:

```var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal=9.99*47;
var profit=9.99*47-5.45*47;
var profitPerUnit=9.99*47-5.45*47/47;
```

But I am not passing the test as the computer showing the code I wrote is not correct.

Hi, never done the challenge you're on. I would guess they are asking you to calculate the sales, profit and profitperUnit based on the above variables.

So I would guess the correct answer to be something like:

```var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal=retailPrice*quantity;
var profit=salesTotal-wholesalePrice*quantity;
var profitPerUnit=profit/quantity;
```

In that way if you change any of the variables wholesalePrice, retailPrice or quantity the script will still work correctly.

Hi, I can't find the challenge you are referring to right now, but my guess is that you need to switch the absolute values with the variables in your calculations. The whole point of your first variables is to make life easier if a value changes for some reason, e.g. the retailPrice drops from 9.99 to 6.99: If you use the variable retailPrice and not the absolute number, you only need to change the value once and the rest will follow automatically.

For example:

```var salesTotal = retailPrice * quantity;
```

... and so on!

(LOL, posted the answer as a comment :/ )

Hi, never done the challenge you're on. I would guess they are asking you to calculate the sales, profit and profitperUnit based on the above variables.

So I would guess the correct answer to be something like:

```var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal=retailPrice*quantity;
var profit=salesTotal-wholesalePrice*quantity;
var profitPerUnit=profit/quantity;
```

In that way if you change any of the variables wholesalePrice, retailPrice or quantity the script will still work correctly.

Thanks to you both. Its working on. Have a great day.