Question

Sam was cycling on a circular track. He travels 600m while cycling 1 round of the track. Find his speed of cycling if he can complete 12 rounds of the track in 30 minutes.

• A. 2 m/s
• B. 4 m/s
• C. 8 m/s
• D. 16 m/s

Answer 1

The correct option is B

4 m/s

1 minute = 60 seconds

30 min= 30 $\times$ 60 = 1800 seconds

Distance covered in 1 round = 600m

Distance covered in 12 rounds = 12 $\times$ 600 = 7200m

Speed$=\frac{Distancetravelled}{Timetaken}=\frac{7200m}{30min}=\frac{7200m}{1800sec}=4m/s$.