12 A group of children recorded the time they spent doing homework on a particular
night. The results are shown below.
Time (T minutes)
0 20 30 45 < T ≤ 50
50 < T ≤65
65 < T ≤ 80
Number of children
12
18
33
14
36
15
(a) Illustrate this data by drawing a histogram on the axes below.