# Question #4be82

Aug 7, 2016

$= 11$ days

#### Explanation:

Yash can accomplish in $1$ day $\left(\frac{1}{20}\right)$ of a work
Bunu can accomplish in $1$ day $\left(\frac{1}{25}\right)$ of a work
Together for $5$ days Duo completed $5 \left(\frac{1}{20} + \frac{1}{25}\right) = \frac{9}{20}$ of the work
So the remaining work is $1 - \frac{9}{20} = \frac{11}{20}$
Since
Yash can accomplish $1$ work in $20$ days
or
He can accomplish $\frac{11}{20}$ work in $\left(\frac{11}{20}\right) 20 = 11$ days