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Question
| Age group (in years) |
No. of Persons | Measure of central angle |
| 20 – 25 | 80 | `square/200 xx 360^circ = square` |
| 25 – 30 | 60 | `60/200 xx 360^circ = square` |
| 30 – 35 | 35 | `35/200 xx square = 63^circ` |
| 35 – 40 | 25 | `25/200 xx 360^circ = square` |
| Total | 200 | `square` |
Solution
| Age group (in years) |
No. of Persons | Measure of central angle |
| 20 – 25 | 80 | `bb80/200 xx 360^circ = bb(144^circ)` |
| 25 – 30 | 60 | `60/200 xx 360^circ = bb(108^circ)` |
| 30 – 35 | 35 | `35/200 xx bb(360^circ) = 63^circ` |
| 35 – 40 | 25 | `25/200 xx 360^circ = bb(45^circ)` |
| Total | 200 | `bb(360^circ)` |
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