Call number: n
=> 3 x (n/3 + 8) = 11
n/3 + 8 = 11/3
n/3 = 11/3 - 8
n/3 = -13/3
n=-13
4 green blocks should be added because there are already 4 blocks between the 1 blue and 3 yellow. Adding the 4 green blocks would make the total number of blocks 8
Answer: 20%
Step-by-step explanation: 600*0.20 = 120