Question
Download Solution PDFMohan goes to office from home at a speed of 20 km/h and returns to home from office at a certain speed. If the average speed is 24 km/h, then what is the speed while returning?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
Speed from home to office = 20 km/h
Average speed = 24 km/h
Concept:
Let the speed while returning from the office to home be denoted by x. We can use the concept of average speed to set up an equation and solve for x.
Solution:
The formula for average speed is given by:
Average speed = 2ab/(a + b)
where a and b are the speeds of two different segments.
Using the given data, we have:
24 km/h = (2 × 20 km/h × x)/(20 km/h + x)
Simplifying this equation, we find:
480 km/h + 24x km = 40x km/h
16x = 480
x = 30 km/h
Therefore, the speed while returning is 30 km/h.
Last updated on Jun 26, 2025
-> The Staff Selection Commission has released the SSC GD 2025 Answer Key on 26th June 2025 on the official website.
-> The SSC GD Notification 2026 will be released in October 2025 and the exam will be scheduled in the month of January and February 2026.
-> The SSC GD Merit List is expected to be released soon by the end of April 2025.
-> Previously SSC GD Vacancy was increased for Constable(GD) in CAPFs, SSF, Rifleman (GD) in Assam Rifles and Sepoy in NCB Examination, 2025.
-> Now the total number of vacancy is 53,690. Previously, SSC GD 2025 Notification was released for 39481 Vacancies.
-> The SSC GD Constable written exam was held on 4th, 5th, 6th, 7th, 10th, 11th, 12th, 13th, 17th, 18th, 19th, 20th, 21st and 25th February 2025.
-> The selection process includes CBT, PET/PST, Medical Examination, and Document Verification.
-> The candidates who will be appearing for the 2026 cycle in the exam must attempt the SSC GD Constable Previous Year Papers. Also, attempt SSC GD Constable Mock Tests.