He’s inviting 15 guests and will need 2 pounds per person so he will need 15*2 = <<15*2=30>>30 pounds of ice
Ice is sold in 10-pound bags and he needs 30 pounds so he will need 30/10 = <<30/10=3>>3 bags of ice
Each bag is $3.00 and he needs 3 bags so they will cost 3*3 = $<<3*3=9.00>>9.00
#### 9