The following table gives the number of pages written by Sarika for completing her own book for 31 days :
| Number of pages | \(16-18\) | \(19-21\) | \(22-24\) | \(25-27\) | \(28-30\) |
| Number of days | 2 | 4 | 7 | 8 | 10 |
Find the mean number of pages .
Answer:
The mean is .
(Round off to nearest whole number)