**Answer:**

**Step-by-step explanation:**

green marbles are 12 –> 1/2 of yellow and red

12×2=24 each yellow and red

(24×2)+12=60 yellow, red, green—> 1/2 of the blue

60×2= 120 marbles inside a jar.

**Answer:**

**Step-by-step explanation:**

green marbles are 12 –> 1/2 of yellow and red

12×2=24 each yellow and red

(24×2)+12=60 yellow, red, green—> 1/2 of the blue

60×2= 120 marbles inside a jar.