A two-digit number becomes five-sixth of itself when its digits are reversed. Two digits differ by one. The number is :

The ratio between the present ages of P and Q is 6 : 7. If Q is 4 years older than P, what will be the ratio o...

The difference between a number and its two-fifth is 510. What is 10 percent of that number?

The profit earned by selling an article for Tk. 832 is equal to the loss incurred when the same article is sol...

The ratio of three numbers is 3 : 4 : 7 and their product is 18144. The numbers are :

P and Q started a business investing Tk. 85,000 and Tk. 15,000 respectively. In what ratio the profit earned a...

A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same...