Question

The following series relates to the daily income of workers employed in a firm. Compute the

1. Highest income of lowest 50% workers,
2. Minimum income earned by the top 25% and
3. Maximum income earned by lowest 25% workers.

| Daily Income (in Rs.) | Number of workers |
| 10- 14 | 5 |
| 15 - 19 | 10 |
| 20 - 24 | 15 |
| 25 - 29 | 20 |
| 30 - 34 | 10 |
| 35 – 39 | 5 |