| Channel | £000 |
|---|---|
| Digital | 80 |
| TV | 70 |
| 160 | |
| Radio | 70 |
| Total | 380 |
Share = part ÷ total × 100, using the overall total as the denominator. The correct answer is 21.1%. Traps to avoid: 18.4% comes from the "wrong slice" error; 26.7% comes from the "divided by others" error; 10.5% comes from the "wrong total" error; 42.1% comes from the "wrong slice" error.