How many blue marbles are there?

its 7

Step-by-step explanation:

Because it said it's 3 times larger than the red so we had to find the answer what is 3 times lower then you divide 27 and three which is 7 and 7 times 3 is 27 so you get your answer 7. I'm also a six grader i hope this helps! sorry if im wrong :{             7*3 =27                                   3 divided by 27=7                                       <3

We know how many red marbles are in the jar, but we don't know how many blue marbles in the jar. In the word problem, we can put b as our variable to represent how many blue marbles. Since "3 times as many" means to add, we can put 3x in the equation. We would have to put 27 and b in the equation too.

Hence, the answer is 27 + 3x + B = ?