A train of length 400 m takes 15 seconds to cross a train of length 300 m travelling at 60 km per hour from the opposite direction along a parallel track. What is the speed of the longer train, in km per hour?
The correct answer is A
A wire is moulded into a circle of radius 21 m. Then the wire is bent and shaped into a rectangle of length 36 m. Find the area of the rectangle thus fo...
A circle is inscribed in a square an equilateral triangle of side 6√2 cm is inscribed in that circle the length of the diagonal of the square is-
If the volumes of two cubes are in the ratio 343:64, then ratio of their edges is
In an examination the average marks of Rohit is 55. If he got 15 more marks in science and 27 more marks in maths then his average would have been 61. F...
A tank whose length, width and height are 20 metres, 18 metres and 10 metres respectively is completely filled with juice. If the juice costs Rs.4/m
There is a rectangular paper, whose length and breadth are in the ratio 7:8, respectively and it has a perimeter of 60 metres. If a triangular piece wit...
The volume of a solid cube is 1000 m3. If whole cube is to be painted at a rate of Rs. 6 per m2, then what will be the cost of pai...
If the numerical value of twice the curved surface area of a right circular cylinder is equal to the numerical value of its volume, then what is the num...
A rectangular plot of size 40 m (length) 20 m (width) is to be grazed by a horse leaving a margin of 5 m from all sides for growing plants and also ...
The area of a rectangular field is 4374 m2 and its length to breath is in the ratio of 3:2. What is the perimeter of the field?
