The daily rate for a hotel room that sleeps 4 people is Tk. 390 for one person and X taka for each additional person. If 3 people take the room for one day and each pays Tk 210 for the room, then what is the value of X?

The value of a machine is Tk.6250. Its value decreases by 10% during the first year, 20% during the second yea...

The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If th...

If the radius of a circle is increased by 100%, by what % is the area of the circle increased?

What would be the measure of the perimeter of a square whose area is equal to 256 square cm?

If a, b, and c are the lengths of the three sides of a triangle, then which of the following is true?

The area of a rectangle R with width 4 feet is equal to the area of a square S, which has a perimeter of 24 fe...