Acar dealership has 240 cars in the parking lot and 17.5% of them are red. of the other 6 colors in the lot each color has the same number of cars. if one of the colors is black, how many black cars are in the lot?

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?