Question
A train travels from Station A to Station B at a speed
of 60 km/h and returns from Station B to Station A at a speed of 40 km/h. If the distance between the two stations is 120 km, find the average speed of the train for the entire journey.Solution
Let the distance between the two stations be 120 km. Time taken to travel from A to B = 120/60 = 2 hours. Time taken to travel from B to A = 120/40 = 3 hours. Total time taken for the round trip = 2 + 3 = 5 hours. Total distance traveled = 120 + 120 = 240 km. Average speed = 240/5 = 48 km/h.
In which generation did multi-programming start ?
Which of the following is incorrect regarding “PM Ujjwala Yojana”?
Who of the following first used the word biodiversity?
Working alone, B can complete the work in 16 days. C is twice as efficient as B and A takes 4 days more than it takes C to complete the work. Working to...
Which one of the following statements regarding an Overseas Citizen of India (OCI) is not correct?
Three dice are rolled. What is the probability that at least one die will show 6?
Who was the teacher of Sheikh Nizamuddin Auliya?
“Wannacry” and “Petya” are related to which?
If the HCF and the LCM of two numbers are 7 and 245, respectively, then their product is:
With reference to term 'White Good' seen sometime in news, which of the following statements is correct
Relevant for Exams:
