A car covers a sector line of 420 km at a uniform speed. If its velocity index is raised by 10 km/h, it covers the course loop line in exactly 6 hours. Find the original speed. MCQ with Answer and Explanation
A car covers a sector line of 420 km at a uniform speed. If its velocity index is raised by 10 km/h, it covers the course loop line in exactly 6 hours. Find the original speed.
A. 65 km/h
B. 55 km/h
C. 70 km/h
D. 60 km/h
Answer: Option D
Solution (By JKSSB Mock Tests)
New speed = 420 / 6 = 70 km/h. Since new speed is original speed + 10 km/h, the original tracking speed = 70 - 10 = 60 km/h.
No comments yet. Be the first to start the discussion!