What would be the ratio of x and y if 5x+9y=61 and 7x+3y=47?

The length of a rectangle is three times its breadth. Waht is the perimeter of the rectangle (in meters) if it...

If a deposit of Tk.750 earns simple interest @ 8% per annum and that of Tk. 1250 earns the same @6% per annum,...

The circumference of a wheel is 6.25 meters. How many cycles will it make in order to cover a distance of 40km...

In how many years amounts of money will treple itself at a simple rate of interest is 20% per annum?

A woman says, "If you reverse the digits my age, the figures represent my husband's age. He is senior to me an...

A is 3 years older than C. B and D are twins. How older is c than D?