Question
Train ‘A’ can cross a pole in 10 seconds and a 200
metre long platform in 14 seconds. If the ratio of length of train ‘A’ and train ‘B’ is 2:5, respectively, then find the time taken by train ‘B’ to cross a pole with a speed of 25 m/s.Solution
Let the length and speed of the train ‘A’ be ‘l’ metre and ‘s’ m/s, respectively. According to question, l = 10s Also, 14s = 10s + 200 Or, 4s = 200 Or, s = 50 Therefore, length of train ‘A’ = 10s = 500 metres Length of train ‘B’ = 500 × (5/2) = 1250 metres Required time taken = 1250 ÷ 25 = 50 seconds
According to the second health index launched by Niti Aayog 2019 - 2020 which state has topped the list?
What Percentage of Aluminum is Present in Earth's Crust?
In which state is Fort Madikeri located?
Which of the following organizations brings out the publication known as ‘World Economic Outlook’
What is the upper limit for loans provided to small entrepreneurs under the Pradhan Mantri Mudra Yojana?Â
World Blood Donor day is observed on?
Recently Government of India, World Bank and a state government signed an agreement of $120 million to improve access to water supply. Name the state:
Consider the following statements and choose the correct answer with the help of the codes given below:
Assertion (A): Sodium metal is preserved ...
The Pradhan Mantri Shram Yogi Maan-Dhan Yojana was introduced to provide social security to which segment of workers?
Who has won gold medal in Commonwealth Wrestling Championship held in South Africa
