Question
1200 metres long train crosses a man who is moving in
the same direction with a certain speed in 25 seconds. If the same train can cross a pole in 20 seconds with the same speed, then find the speed of the man.Solution
Let the speed of the man be x m/sec. Speed of train = 1200/20 = 60 m/sec Relative speed of the train = (60 - x) m/sec According to the question, = (60 - x) = 1200/25 = x = 60 - 48 = x = 12 Therefore the speed of the man = 12 m/sec
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 972π cm3 inside it.
The circumference of a circle is equal to the perimeter of a rectangle whose length and breadth are in ratio 13:10, respectively. If the area of the rec...
Perimeter of a square shaped plot is 80 metres and the area of a rectangular plot is 38% more than that of the square shaped plot. Find the area (in m
If the curved surface area and the radius of a cylinder are 990 cm2 and 21 cm, respectively, then find the volume (in cm3) of the ...
The volume of a cuboid whose length, breadth, and height are in the ratio 5:3:2, respectively, is 3,000 cm³. Find the lateral surface area of the cuboi...
The length of a 744 metre long wire is 12 times the perimeter of a rectangular French garden. Find the area of the rectangular garden given that its len...
Two paths of width 6 metres are to be made in the centre of rectangular field such that they are perpendicular to each other. Find the area (in m2<...
A street of width 25 metres surrounds from outside a rectangular garden whose measurement is 190 m × 220 m. The area of the path (in square metres...
- What is the surface area of a sphere if its volume is 4,851 cm³?
Relevant for Exams:
