.HI does anyone have a clue thanks
A certain shade of gray paint is obtained by mixing 3 parts of white paint with 5 parts of black paint. If 2 gallons of the mixture is needed and the individual colors can be purchased only in one-gallon or half- gallon cans, what is the least amount of paint, in gallons, that must be purchased in order to measure out the portions needed for the mixture?
(B) 2 1/2
(D) 3 1/2
we need 3/4 gallons of white and 5/4 gallons of black so we need to buy
1 gallon of white and 1.5 gallons of black => 2.5 gallons total, B.