Question
A lad was asked his age by his friend. The lad
said “The number you get when you subtract 25 times my age from twice the square of my age will be thrice your age. If the friends age is 14 then what will be the age of lad.ÂSolution
Let the age be x  As per the question  2x 2 –25x-42=0  X= 28 or –3  So, the required answer is 28 years.
The sum of the total surface areas of two cubes is 1572 cm2. If the product of the length of their edges is 99 cm2, then find the ...
A giant circular wheel has a diameter of 14 metres. In how many revolutions will the wheel cover a total of 4.4 km?
The ratio of length to breadth of a rectangle is 5:4, respectively. Perimeter of rectangle is 270 cm. If each side of a square is 25% more than the brea...
The angle of elevation of the top of a tower from a point on ground which is 30 mtrs. away from the foot of the tower is 30°. Height of the tower is:
The breadth of a rectangle is increased by 10 cm, it will become twice the length of the rectangle. If the new perimeter is 360 cm, then find the origin...
If the edge of the cube is increased by 50%, then find the percentage increase in the volume of the cube.
Two sides of the triangle are 14.8 cm and 10 cm. If height of the triangle corresponding to 14.8 cm side is 8 cm, find the area?
...The perimeter of a square field is 16 cm more than the perimeter of a rectangle. The length of the rectangle is 72 cm which is 300% of its width. If a s...
The volume of cone is 1689.6 cm3. If its height is 2.8 cm then find the radius of the cone.
The difference between each Internal angle and each external angle of a polygon is 60°. Find the number of Sides.
Relevant for Exams:
