Visitors to a cinema are either children, adults or pensioners. The ratio of children to adults is 2:5. The ratio of adults to pensioners is 3:4. A stratified sample of 315 is to be taken from the visitors. How many pensioners should be in the sample?

Will give the box plots below show the math scores of students in two different classes: class a 55 72 75 89 95 class b 55 70 75 94 100 based on the box plots, which statement is correct? a: the median score of class a is greater than the median score of class b. b: the lower quartile of class a is greater than the lower quartile of class b. c: the upper quartile of class a is greater than the upper quartile of class b. d: the maximum score of class a is greater than the maximum score of class b.