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The number of business owners and their employees attending the morning, afternoon and evening sessions of a short course are shown in the table below.
| Attendees | Session | ||
| Morning | Afternoon | Evening | |
| Business owners | 68 | 57 | 22 |
| Employees | 241 | 168 | 35 |
The total number of people attending the morning session, the total number attending the afternoon session and the total number attending the evening session can be found by calculating