The Price On The Item Is $4.80 And The Tax Is 5%. How Much Including Tax Should The Cashier Refund To The Customer?

$4.80 + 5%*$4.80
= $4.80*(1+5%)
= $4.80*(1.05)
= $5.04

The customer should receive a refund of $5.04.

---

If the customer has her receipt, the clerk can read this number from the receipt.