A sum on compound interest becomes three times in 4 years. How many years will it take to become 27 times the original if the interest is calculated at the same rate
If the diagonals of two squares are in the ratio 2:5, find the ratio of their areas
The cost of carpeting a room of 18 m long with a carpet of 75 cm wide at Rs. 4.50 per meter is Rs. 4.50 per meter is Rs. 810. The breadth of the room is
The radii of two cylinders are in the ratio 3:5 and their heights are in the ratio 2:3. Find the ratio of their curved surface areas
Find the total volume of 14 cubes whose edges are 12 cm, 13 cm,.....,25 cm respectively
If ∝ and β are the roots of the equation 3x2 - 6x+4 = 0, find the value of ∝/β+β/∝