3. Two marks example problems I

1. \(A\) and \(B\) together can do a piece of work in \(16\) days and \(A\) alone can do it in \(48\) days. How long will \(B\) take to complete the work?

 

Number of days \(=\)

 

 

2. \(A\) works \(3\) times as fast as \(B\) and is able to complete a work in \(24\) days less than the days taken by \(B\). Find the time in which they can complete the work together.

 

Number of days \(=\)