If 5 men and 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work?

A person travels form P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is the ave...

A train 360 m long is running at a speed of 45 km/hour. In what time will it pass a bridge 140 m long?

The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the sa...

A sum of money amounts to Tk. 9800 after 5 years and Tk. 12005 after 8 years at the same rate of simple intere...

At what rate of compound interest rate per annual will a sum of Tk. 1200 become Tk. 1348.32 in 2 years?

The area of a rectangle is 460 square meters. If the length is 15% more than the breadth, what is the breadth...