Answer:
There is no solution the answers there is not the right answer
If it is 5 equally spaced marks, then each mark represents 1/6
0 -- 1/6 -- 2/6 -- 3/6 -- 4/6 -- 5/6 -- 1
so the third mark would represent 3/6 which reduces to 1/2
I got 6 for my answer, but I'm not 100% sure if I'm right.
6(2x-11)+15=21
12x-66+15=21
12x-51=21
+51 +51
12x=72
----- ----
12 12
x=6
THE ANSWER IS GREATER THAN I TOOK THIS LESSON!
51/2 = 25.5
11/5 = 2.2
25.5 + 2.2 = 27.7 or 27 7/10
