A number consists of two digits. The sum of the digits is 9. If 63 is subtracted from the number its digits are interchanged. Find the number .

If 4 times an integer x is increased by 10 , the result is always greater than 18 and less than 34 . what is t...

when a positive integer K is divided by 6 , the remainder is 3 , what is the remainder when 5 k is divided by...

For some value of x , 5(x+2) =y . After the value of x is increased by ,3 5(x+2) =z. what is the value of (z -...

An ice cream parlour makes an ice cream using one of six different flavors of ice cream, one of three differen...

A recipe for 4 servings requires salt and pepper to be added in the ratio of 2: 3 . If the recipe is adjusted...

At a book fair, Danesh buys three pencils that cost Tk. 3.25 each, and a color pen that costs Tk. 5 . Which ex...