Final answer:
Since one-third of the pole is to be painted blue, the remaining two-thirds is equally divided between red and green. Therefore, the remaining one-third of the pole, not mentioned explicitly, is assumed to be green.
This correct answer b) Green
Step-by-step explanation:
The question involves a pole that is to be painted with three colors: red, blue, and green. According to the information provided, one-third of the pole is to be painted blue. This fact suggests that the remaining portion of the pole must be divided between the other two colors, red and green.
Since no other color proportions are specified, and because red and green are the other two primary colors (in terms of light, as well as being commonly accepted as primary pigment colors), it is logically sound to assume that the remaining portion to be painted should be equally divided between red and green.
Therefore, if one-third is blue, then the remaining two-thirds would be divided equally between red and green, making one-third red and one-third green.
The answer to the question "A pole is to be painted red, blue, and green. One-third blue, and the remaining ___ how long is the pole?" is that the remaining one-third is green, since we can rule out yellow and purple, which are not mentioned in the context of this problem.