Pls help me to solve this question

The following shows the ages of 40 diabetes patients: 46 29 58 67 64 34 30 37 45 55 60 38 27 40 36 33 50 20 36 62 70 47 38 66 24 41 37 48 43 40 42 52 61 61 25 47 35 46 57 70 ii. Identify the number of classes and class width, and construct a frequency distribution table for your data. iii. Construct a histogram and a frequency polygon for the data (separately). (Note: computer generated charts are not acceptable)