Josh can buy bottles of water in packages of 6 for $18.00 or in packages of 4 for $12.84. How much money does he save by buying 24 bottles of water at the better price?

He saves $5.04 by buying at the better price.

Step-by-step explanation:

Calculate the total cost in each case and then find the difference:

For cases of 6: $18 x 4 = $72

For cases of 4: $12.84 x 6 = $77.04

$77.04 - $72 = $5.04