Two men start together to walk a certain distance, one at 4 km/h and another at 3 km/h. The former arrives half an hour before the latter. Find the distance.
6 km
9 km
8 km
7 km
Correct Option: A
Let total distance = x km According to the question, x/3 - x/4 = 1/2; ⇒ x/12 = 1/2 ∴ x = 6 km
