The average of a non-zero number and its square is 5times the number. The number is-

Three fourth of a number is 60 more than its one-third. The number is:

Eighteen years ago,a father was three time as old as his son.Now the father is only twice as old as his son. T...

A sells an article which cost him Tk. 400 to B at a profit of 20%. B then sells it to C,making a profit of 10%...

The ratio of the incomes of A and B is : 4 and the ratio of their expenditure is 3 : 2. If at the end of the y...

A started a business with Tk. 21,000 and is joined afterwards by B with Tk. 36,000. After how many months did...

If 12 carpenters, working 6 hours a day, can make 460 chairs in 24 days, how many chairs will 18 carpenters ma...