green = blue + 2
blue + green = 15
blue + blue + 2 = 15
2b = 13
You can't have a 1/2 of a marble or can you?
blue = 13/2
Ok math smarties:
Billy has 2 more green marbles than blue marbles. In all, he has 15 marbles. How many blue marbles does he have?
1 answer