Answer:
There are 28 blue marbles.
Step-by-step explanation:
Antonio has 15 green marbles and 12 red marbles. The rest of the marbles are blue.
Let the number of blue marbles be x
Total marbles green plus red = [tex]15+12=27[/tex]
Now, Antonio has a total of 55 marbles.
Equation forms:
[tex]55=x+27[/tex]
We will subtract 27 from 55 to get x.
= [tex]55-27=x[/tex]
Hence x = 28
Therefore, there are 28 blue marbles.
