I have to reach a place at fixed time. If I walk at 3 km/hr. I will be late for 20 minutes. If I walk at 4 km/hr, I will reach there 10 minutes early. What distance I have to travel?
A7 km
B6 km
C12 km
D2 km
A7 km
B6 km
C12 km
D2 km
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