Answer:
1/4 = 3/12 = 1/12+1/12+1/12
Step-by-step explanation:
Because 1/4 equals 3/12.
재미없던 이야기가 끝난 걸
난 몰랐었지, 기다렸던 건 나뿐인 걸
그 얘기 속 너와 날 계속 돌려봤어
아무 일도 없던 게 더 미치게 해
I don't see a chart, but, to find the mean you add all of the values up together and then divide by however many values you added.
For example, if she bakes 5 cakes one month, 7 cakes another month, and 2 cakes a final month, you'd add 5 + 7 + 2 to get 14. Then you'd divide 14 by 3, since you added 3 values together.
If you still need help, post the chart and I'll explain further.