Question
A bus takes 10 seconds to pass a standing man and 28
seconds to pass a traffic light, which is 405 meters long. Determine the time it takes for the bus to pass a boy running towards it at a speed of 9 km/h.Solution
ATQ, Let the length of the bus be 'x' meters. So according to question:Â x/10 = (x + 405) /28 28x = 10x + 4050 18x = 4050, x = 225 So, the length of the bus = 225 meters Speed of the bus = 225/10 = 22.5 m/s Speed of the boy = 9 X 5/18 = 2.5 m/s Relative speed of the bus = 22.5 + 2.5 = 25 m/s So, the time taken by the bus to cross the boy = 225/25 = 9 seconds
- Match List I with List II - Choose the correct answer f... 
- The headquarter of RBI is situated at- 
- A, B, C, D and E are standing in row. 'A' is between 'B' and 'D'. E is not at the starting of row. 'C' is just before D. - Study above statement ... 
- What is the full form of NABARD? 
- A certain logic has been followed in written the number below the line in each block. Follow the same logic to choose the correct number at the space be... 
- Actress and Model "Harnaaz Sandhu" was crowned as __________ in Dec 2021. 
- Consider the following :        - 1.     Belief in Bodhisattvas - 2.     Worship of statues of the Buddha - 3.   ... 
- According to the 2011 Census, the population of India has registered 
- Which amongst the following statements is/are not correct ? - 1.     Isthmus is a narrow strip of land joining two landmasses. - 2. �...