(a) Solve for x, if ⅓x+1⅔<-¾x-½
(b) The following shows the distribution of marks of students in an examination.
$\table 6,43,26,18,27;42,8,22,31,39;55,44,37,47,59;10,12,36,53,48$
(i) Make a stem-and-leaf plot of the marks above
(ii) Find the probability of selecting a student who scored between 40 and 50.
(iii) Find the number of students who passed the examination, if the pass mark was 30.