A car driver, driving in a fog, passes a pedestrian who was walking at the rate of 2 km/h in the same direction. The pedestrian could see the car for 6 minutes and it was visible to him up to distance of 0.6 km. what was speed of the car?

• ক 20 kmph
• খ 8 kmph ✅ সঠিক উত্তর
• গ 15 kmph
• ঘ 30 kmph