Question
Train M, βxβ metres long crosses (x β 30) metres
long platform in 22 seconds while train N having the length (x + 30) metres crosses the same platform in 25 seconds. If the speeds of both trains are same then find the value of βxβ.Solution
Total distance travelled by train M = (2x β 30) m Total distance travelled by train N = (x + 30 + x β 30) = 2x m According to question, => (2x β 30)/22 = 2x/25 => 50x β 750 = 44x => 6x = 750 => x = 125 m
Perimeter of a square is equal to perimeter of a rectangle, if area of square is 441 sq.cm and length of rectangle is two times that of breath. Find the...
The sum of the perimeters of a square and a rectangle is 120 metres. If the sum of the length and breadth of the rectangle is 32 cm, then find the area ...
The volume of a cube is 512 cmΒ³. If the cost of painting the cube is Rs. 6 per cmΒ², then find the cost of painting five faces of the cube.
The area of a square is 225 cmΒ². The breadth of a rectangle is 20% more, and the length is 50% more than the side of the square. Find the ratio of the ...
The perimeter of a square field is 12 cm more than the perimeter of a rectangle. The length of the rectangle is 40 cm which is 200% of its width. If a s...
Find out the volume of a tetrahedron whose side is 6√2 cm³ ?
- Find the total surface area of a cuboid that is formed by merging two identical cubes, where the surface area of each cube is given as 384 cmΒ².
The sum of the perimeters of a square and a rectangle is 124 metres. If the sum of the length and breadth of the rectangle is 34 cm, then find the area ...
A cone has a radius of 5 cm and a slant height of 13 cm. Find the total surface area of the cone.[Take Ο = 3.14 ]
The angle of elevation of the top of a tower from a point on the ground which is 45 meters. away from the foot of the tower is 30Β°. The height of the t...