Painter A can paint a house in 16 days and painter B can do the same work in 20 days . With the help of painter C, they paint the house in 8 days only. Then , Painter C alone can do this task in -

A and B start at the same time with speeds of 40 km /hr and 50 km/hr respectively. If in covering the journey...

A person borrows TK. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at...

Two tarins running in opposite direction cross a man standing on the platform in 27 seconds and 17 seconds res...

A tank has two leakages. The first leakage alone can empty the tank in 9 min and the second alone would have d...

The time taken by a man to travel 36 miles downstream is 90 min less than to go the same distance upstream . T...

A boat runs at 22 km per hour along the stream and 10 km per hour against the stream .Find the ratio of the sp...