For the following questions answer them individually
If a thin rectangular plate of 60 mm x 30 mm is inclined at an angle of 60° to the Horizontal Plane, its top view may be :
Pipe 'P' can fill a tank in 36 hours and pipe 'Q' can fill this tank in 45 hours. If both the pipes are opened simultaneously, then how much time will be taken to fill this tank ?
When Rain and Mohan work together, they complete a work in 4 days. if Ram alone can complete this work in 12 days then in how many days Mohan alone can complete this work ?