Question
Download Solution PDFA train covers 40 km between two stations in 45 minutes. It covers another 30 km in 30 minutes and the remaining 20 km in 15 minutes. Find the average speed of the train in the whole journey.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFDistance1 = 40 km, Time1 = 45 minutes
Distance2 = 30 km, Time2 = 30 minutes
Distance3 = 20 km, Time3 = 15 minutes
Formula used:
Average Speed = Total Distance / Total Time
Calculations:
Total Distance = 40 km + 30 km + 20 km
⇒ Total Distance = 90 km
Total Time = 45 minutes + 30 minutes + 15 minutes
⇒ Total Time = 90 minutes
Convert Total Time to hours:
⇒ Total Time = 90 / 60 hours
⇒ Total Time = 1.5 hours
Average Speed = Total Distance / Total Time
⇒ Average Speed = 90 km / 1.5 hours
⇒ Average Speed = 60 km/h
∴ The correct answer is option (2).
Last updated on Jun 3, 2025
-> The Staff Selection Commission has officially released the SSC Selection Post Phase 13 Notification 2025 on its official website at ssc.gov.in.
-> A total number of 2423 Vacancies have been announced for various selection posts under Government of India.
-> The Computer Based Exam is scheduled from 24th July to 4th August, 2025. Candidates will be able to apply online from 2nd June 2025 to 23rd June 2025.
-> The SSC Selection Post Phase 13 exam is conducted for recruitment to posts of Matriculation, Higher Secondary, and Graduate Levels.
-> The selection process includes a CBT and Document Verification.
-> Some of the posts offered through this exam include Laboratory Assistant, Deputy Ranger, Upper Division Clerk (UDC), and more.
-> Enhance your exam preparation with the SSC Selection Post Previous Year Papers & SSC Selection Post Mock Tests for practice & revision.