If u : v= 4 : 7 ,  v : w = 9 : 7 and u=72 then find the value of w.

The prices of two articles are in the ratio 3 : 2 respectively. The price of the first article is increased by 40% and that of the second article is decreased by x%. If the new ratio of both the articles is : 7 : 3 then what is the value of x?

An article is sold for Rs 4,777 after giving a discount of 15%. What is the marked price of the article?

If Sonu is driving a car with a speed of 20 m/s, then in what time will Sonu cover a distance of 936 km?

If a chord of length 30 cm is at a distance of 8 cm from the center of the circle, then the length of the chord of the same circle which is at a distance of 15 cm from the center is equal to

The ratio of the areas of two isosceles triangles having the same vertical angle is 1 : 9.The ratio of their heights is -

Area of a circle inscribed in a square is 308 cm².The length of the diagonal of the square is

A sum of ₹ 3000 yields an interest of ₹ 1080 at 12% per annum simple interest in how many years ?