Question
There are three numbers a, b and c such that a = 160,
(a + b) = 460 and (c β b) = 80. Find their average.Solution
ATQ, Given, a = 160, (a + b) = 460 and (c β b) = 80 Therefore, b = 460 β 160 = 300 And, c = 300 + 80 = 380 Required average = (160 + 300 + 380)/3 = 280
A cube of maximum possible volume is cut from a sphere of radius 5β3 cm. What is the ratio of the volume of a cube to that of the sphere?
If in a ΞABC, AD is internal angle bisector & D is a point on BC, AB = 5cm, BC = 7cm then what is BD:CD?

The length of a rectangle is four times its breadth. If its length is increased by 10 cm. and breadth is increased by 10 cm, the area of the rectangle i...
The perimeter of a rectangle is 120% more than perimeter of a square of side 10 cm. If the length of rectangle is 250% more than side of square then fin...
What is the difference between (in m2) the area of a circular field of radius 14 metres and area of a rectangular piece of land having its di...
A solid cube with side 'a' is made of a material weighing 400 kg. Another cube is hollow, made of the same material, with an outer side length '3a' and ...
The volume of a cube is 2744 cmΒ 3Β in which a maximum possible size of circle is drawn on each face. The circle drawn on each face of the ...
If the radius of a right circular cylinder open at both the ends, is decreased by 25% and the height of the cylinder is increased by 25%. Then the curve...
B is 25 percent more than C and C is 73 percent less than D. If B is 729, then what is the value of D?