Answer:
Step-by-step explanation:
3 + 4 + 7 = 14 which is the total
The blue balloons number 7 because 14 - (3 + 4) = 14 - 7 = 7
So the ratio is 7 blue / 14 (which is the total)
7/14 = 1/2 or 1 to 2
3:4:7
14-(3+4)
=14-7
=7
red:white:blue
28$
Answer: 14
Step-by-step :x +3 y = 15 , 2 x -y =14
but let me know if it's right ok