2022 · Q93
What is the time taken by a person to cover one round of a circular park of diameter 210 m if he walks at a speed of 6 km/hr? (π = (22)/(7))
Elementary MathematicsTime, Speed and Distance
- A6.6 minutes
- B5.5 minutes
- C4.4 minutes
- D3.3 minutes
Explanation
Distance = π×210 = 660 m; speed 6 km/h = 100 m/min; time = 660/100 = 6.6 minutes. The trap is to mix up units: convert 6 km/h to 100 m/min before dividing. The keyed option is A.