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# This code i not passing

We have a bunch of prices and sales numbers and we need to find out our total earnings.

Let's start by writing a function named product_sales that takes a single two-member tuple made up of a price and a number of units sold. product_sales should return the product of the price and the number of units.

prices.py
```prices = [
(6.99, 5),
(2.94, 15),
(156.99, 2),
(99.99, 4),
(1.82, 102)
]

def product_sales(price, units):
return price * units
```

This function takes two individual arguments, but the instructions ask for a function " that takes a single two-member tuple"

So your declaration might look something like:

```def product_sales(one_tuple):
```

And of course, the body would need to be adapted accordingly.

We have a bunch of prices and sales numbers and we need to find out our total earnings.

Let's start by writing a function named product_sales that takes a single two-member tuple made up of a price and a number of units sold. product_sales should return the product of the price and the number of units.

prices = [ (6.99, 5), (2.94, 15), (156.99, 2), (99.99, 4), (1.82, 102) ] def product_sale(single_two): price,units=single_two return price* units print(reduce(product_sale,prices))

NB why not working too

Two issues here:

• the instructions ask for a function named product_sales (plural) not "product_sale" (singular)
• the "print" statement is not something asked for by the instructions and will confuse the evaluator

def product_sales(one_tuple): product_sales = 21.0 return product_sales

this code passed but not sure how

Looks like you tricked the challenge by guessing the result for the values it tested with.
But a valid solution would use the argument and calculate) the result.