# In How many days can Saurav alone dot it? if

Sourav and Sahil can together do a piece of work in 15 days. Sahil alone can do it 20 days. In how many days can Sourav alone do it?

- 30 days
- 40 days
- 45 days
- 60 days

**Answer: 60 days
Explanation:-**

Sourav and Sahil can together do a piece of work = 15 days

Sourav and Sahil can together do a piece of work in a day = 1/15 day

Sahil alone can do it = 20 days

Sahil alone can do in a day = 1/20

Sourav alone can do it in a day = 1/15 – 1/20 = (4 – 3)/60 = 1/60

Therefore, Sourav alone can do it = 60 days