Question

. Dhoni and Sehwag can do a work in 16 days and 28 days respectively. They start the work together but Sehwag leaves after 7 days. In how many days Dhoni do the remaining work

Answer 1

Number of days Dhoni does works = 28

Number of days Sehwag does works = 16

Now,

It is said that Sehwag and Dhoni have done the work together.

Number of days after Sehwag left = 7

Number of days remaining for Sehwag = 16-7 = 11

Thus, number of days remaining for Dhoni = 28-7 = 21

Hence, Dhoni has 21 days remaining.