50 men or 80 women can finish a job in 50 days. A contractor deploys 40 men and 48 women for this work, but after every duration of 10 days, 5 men and 8 women are removed till the work is completed. The work is completed in

1. (a)45 days
2. (b)50 days
3. (c)54 days
4. (d)62 days