Problema Solution
You have a bag of marbles. There are twice as many blue marbles as red marbles. There are 4 less green marbles than red marbles. If there are 28 marbles in the bag, haw many of each marble is in the bag? Use a 5 step solution.
Answer provided by our tutors
x - blue
y - red
z - green
x + y + z =28
x =2y
y = z - 4
z = y + 4
2y + y + y + 4 = 28
4y = 24
y = 6
x = 12
z = 10