Can someone help me solve this

Can i get some on 18,20,& 22? or one of them

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?