# The Whole Work is Complete In-

Raja can do a piece of work in 20 days while Ramesh can finish it in 25 days. Ramesh started working and Raja joined him after 10 days. The whole work is complete in-

- 20 days
- 50/3 days
- 15 days
- 18 days

**Answer: (2) 50/3 days**

**Explanation:-
**Raja can do a piece of work = 20 days

Therefore, Raja can do a piece of work in a day = 1/20

Ramesh can do a piece of work = 25 days

Therefore, Ramesh can do a piece of work in a day = 1/25

Raja and Ramesh can do together work in a day = 1/20 + 1/25

= (5 + 4)/100

= 9/100

Then, Raja and Ramesh can do together work = 100/9 days

Ramesh can do a work in 10 days = 10/25

Remaining work = 1 – 10/25

= (25 – 10)/25 = 15/25

= 3/5

Then, Raja & Ramesh can do complete remaining work = 100 x 3/5 x 9

= 20/3

Therefore, the whole work is complete = 10 + 20/3

= (30 + 20)/3

= 50/3 days

Hence, the answer is (2) 50/3 days.