Overcharged at the Supermarket: Checking the Receipt

Hi there! How can I help you today?

Hi. I think I was overcharged for a few things.

Oh, I'm sorry. Do you have your receipt?

Here it is. It's a long one!

Okay. Which items are wrong?

The orange juice. The shelf says $3.49.

But I paid $4.39.

$4.39? That's a big difference.

Let's go and check the shelf together.

Hmm... you're right. It says $3.49.

See? 3, 4, 9.

I'm sorry. The price in the system is wrong.

And can you check the avocados too?

They're 2 for $5, right?

Yes, that's this week's deal.

Oh no. The deal didn't work. You paid $2.99 each.

So that's $5.98 instead of $5.

Okay, so we owe you 98 cents for the avocados.

And for the juice, there's a special rule.

A special rule? What do you mean?

If we charge the wrong price, the item is free!

Really? The whole $4.39?

Yes! So that's $4.39 plus 98 cents.

That's... $5.37, right?

Wow, you're faster than my calculator!

Here you go. $5.37 in cash.

Thank you! That was easy.

Enjoy your free orange juice!

Oh, I will. It tastes better free!