To find out how much money Eli needs to buy the rug, we need to add the cost of the rug and the sales tax.
The sales tax is 8% of the cost of the rug, which is:
0.08 x $24 = $1.92
So Eli needs to pay:
$24 + $1.92 = $25.92
Therefore, Eli needs $25.92 to buy the rug.