Question
Happy and Sad are running on a circular track of radius
245 metres. Happy can complete a round in 200 seconds and the speed of Sad is twice the speed of Happy. They started simultaneously towards each other from two points diametrically opposite on the circular path. If they first meet at a point they called it a danger point which is between the two points A and B from where they have started their race, After how much time from the start do they met at danger point for the third time?Solution
Length of the track = 2 × 22/7 × 245 = 1540 metre Distance to be covered for the first meeting = 1540/2 = 770metre Speed of Happy = 1540/200 = 7.7 m/s Speed of Sad = 1540/100 = 15.4 m/s Time taken from the start of first meeting = 770/((7.7+15.4))= 770/23.1 = 331/3 seconds Time taken for Happy and Sad to meet again at Danger Point = LCM of time taken by them to go around the track once = LCM of 1540/7.7 and 1540/15.4 = LCM of 200 and 100 = 200 seconds So, the total required time = 100/3 + 200 +200 = 1300/3 seconds = `433(1/3)` seconds
What is the definition of "Certifying Authority" according to Section 2(g) of the IT Act?
There should not be a gap of more than __________ in between two sittings of house/s of State Legislature?
As per the Occupational Safety, Health and Working Conditions Code, 2020 every person who designs, manufactures, imports or supplies any article foruse ...
Who forms the committee responsible for recommending the appointment of the State Chief Information Commissioner and the State Information Commissioners...
When does an arbitration proceeding actually commence?            Â
In a negligence claim, the requirement that the damage caused by the defendant's breach of duty must not be too remote a consequence is related to______...
Which of the following is not a principle of Natural Justice?
Where both the parties to an agreement are under a mistake as to a matter of fact essential to the agreement, the agreement is__________________
Which of the following statements is true about Red herring prospectus?
The words and expressions used but not defined under the Competition Act, 2002 shall have the same meanings respectively assigned to them in ___________...
Relevant for Exams:
