Abag contains 2 red marbles, 4 green marbles and 6 yellow marbles. mark draws a single marble at random, records its color and returns it to the bag. he does this 48 times.

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning