A man bought 10 kg of rice at ₹ 20 per kg and 5 kg of rice at ₹ 24 per kg. He mixed them together and sold the mixture at ₹ 23 per kg. What is his profit percentage?

The length, breadth and height of a box are respectively 14 m, 12 m and…

The volume of the material of a hemispherical shell with outer and inner radii 9…

The ratio of surface area to diameter of a sphere whose volume is 36π cubic…

A cylindrical tube open at both ends is made of metal. The internal diameter of…

The volume of a right circular cone of height 3 cm and slant height 5…