A certains color paint should have a mix of blue and green in a ratio of 5:2. If a house painter needs to use 8 gallon of green paint, how many gallons of blue paint should he mix with it in order to obtain the right colors?
The ratio is 5:2 and he has 8 gallons of green paint. 8 divided by 2 is 4, so he would need to multiply 5 by 4 to get 20, which is how many gallons of blue paint he would need
