15-year old students
a) How many 15-year old
students took part in
the survey?
(1)
b) How many more 15-year
old students than 11-year
old students spent
between 35 and 45 mins
on social media?
(1)
Total marks: 2
10 20 30 40 50 60 70 80
Time (mins)
Next Question