Lemon yellow paint can be made by mixing 5 gallons of yellow paint and 2 gallons of white paint. How many gallons of yellow paint should be mixed with 9 gallons of white paint to make lemon yellow?

if you need that ratio to have lemon yellow. Find out how many gallons of yellow paint you need for every 1 gallon of white paint.

5gallons of yellow for 2 gallons of white so

5÷2 = 2.5 gallons of yellow paint for every gallon of white

multiply 2.5 by 9 , Because you need 9gallons of white paint. and you get 22.5 or 23 total gallons of yellow paint for 9gallons of white paint