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?
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
Curd is the economical part of which of the following vegetable?
Pennisetum violaceum is a source for ____________ in Bajra.
The Central Warehousing Corporation was established by the Government of India in 1957. Who is the current Chairman of the organization?
Cut or excised leaves remain green for long if induced to root or dipped in_____
The book "Horse Hoeing Husbandry" was written by
Which of following breed of sheep is also called 'Merino of Rajasthan'?
A person got his soil sample analysed and received a test report mentioning soil pH 8.3; ESP 12% and electrical conductivity 5.2 ds m-1.
...Deforestation is
The sensory chemoreceptors is located in the …. region of a nematode?
_____ are the non-nutritive substances usually added to basal feed in small quantity for the fortification in order to improve feed efficiency and prod...
