Study the given table and answer the question that follows.
The table shows the total number of batteries sold by a company (in lakhs) over the years.
Rahul runs at a speed of 6 km/h in a 100-metre race. Rahul gives Bharat a start of 4 metres and still beats him by 4 seconds. Find Bharat’s speed.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 5.4 km/h.
Rahul's speed = 6 km/h = 5/3 m/s
Time taken by Rahul to finish 100 m = 100/(5/3) = 60 seconds
Bharat runs 96 m (since he gets a 4 m start)
Bharat takes 64 seconds (60 + 4, as Rahul beats him by 4 seconds)
Bharat's speed = 96/64 = 1.5 m/s = 5.4 km/h