Given that y is directly proportional to x and y = 2 when x = 8. Find the value of x when y = 8.

In a blue and yellow painting, blue and yellow are used in the ratio 4 : 3. If the ratio of blue and yellow in the upper part is 2 : 3, then in what ratio will the blue : yellow be in the lower part?

The radii of two right circular cylinders are in the ratio 3:2 and the ratio of their volumes is 27: 16. What is the ratio of their heights?

By selling an article at 3/4th of the marked price, there is a gain of 25%. The ratio of the marked price and the cost price is-

Find the ratio between the fourth proportional of 12, 16, 6 and the third proportional of 4, 6.

Answer the following questions

If 35% of a number is subtracted from the second number the second number reduces to its four–fifths. What is the ratio the first number to the second number?