Bunuel wrote:
John and Steve are speed walkers in a race. John is 15 meters behind Steve when he begins his final push. John blazes to the finish at a pace of 4.2 m/s, while Steve maintains a blistering 3.7 m/s speed. If John finishes the race 2 meters ahead of Steve, how long was John’s final push?
A. 13 seconds
B. 17 seconds
C. 26 seconds
D. 34 seconds
E. 51 seconds
Kudos for a correct solution.
J is behind S by 15 m
Relative speed=4.2-3.7=0.5m/s(meaning in 1 s, J covers 0.5 m more than S)
Therefore, to cover a distance of 15m, J will take 15/0.5=30s
Also, to cover additional 2 m, J will take 4 s more
Total time taken=34 S
Answer D