3k-2=2k+4
-2k. -2k
k-2=4
+2. +2
k =6
Correct - wrong percentage
-------------------- = ---------------
wrong 100
68 - 60 x
--------- = ----
60 100
8 x
---- = ----
<span>60 100
</span>800 60x
----- = ----
60 60
13.3% = x
I think they are perpendicular to each other
