A man covers a distance of 22 km in 4 hours by initially walking and then jogging at speed of 4 km/hour and 10 km/hour, respectively. The distance covered by him during walking is
1
10 km
2
12 km
3
15 km
4
18 km
A man covers a distance of 22 km in 4 hours by initially walking and then jogging at speed of 4 km/hour and 10 km/hour, respectively. The distance covered by him during walking is