The table shows the number of hours, a teacher invests on his daily activities.
What is the ratio between sum of time invested by the teacher on 'teaching and reading’ & 'sleep and play’ ?
| Teaching | 8 hours |
| Reading | 6 hours |
| Sleeping | 7 hours |
| Playing | 1 hours |
| Other activities | 2 hours |
1
4 ∶ 7
2
5 ∶ 7
3
7 ∶ 4
4
7 ∶ 5