In a race, an athlete covers a distance of 336 m in 168 sec in the first lap. He covers the second lap of the same length in 56 sec. What is the average speed (in m/sec) of the athlete?

Correct option is A

Given:

Distance for each lap = 336 m

Time for the first lap = 168 sec

Time for the second lap = 56 sec

Formula Used:

Average speed =$$\frac{\text{Total distance }}{\text{ Total time}}$$​​

Solution:
Total distance = Distance of first lap + Distance of second lap
= 336 m + 336 m = 672 m

Total time = Time for first lap + Time for second lap
= 168 sec + 56 sec = 224 sec

Average speed ​$$= \frac{ 672 m }{ 224 sec}$$​
= 3 m/sec

Thus, the average speed of the athlete is 3 m/sec.