Two men start together to walk a certain distance, one at 4 km/hr and another at 3 km/hr. The former arrives half an hour before the latter. Find the distance :
A. 8 km
B. 7 km
C. 6 km
D. 9 km
Answer: Option C
Solution(By Examveda Team)
If the required distance be x km, then$$\eqalign{ & \frac{x}{3} - \frac{x}{4} = \frac{1}{2} \cr & \Rightarrow \frac{{4x - 3x}}{{12}} = \frac{1}{2} \cr & \Rightarrow \frac{x}{{12}} = \frac{1}{2} \cr & \Rightarrow x = 6\,\,{\text{km}} \cr} $$
Related Questions on Speed Time and Distance
A. 48 min.
B. 60 min.
C. 42 min.
D. 62 min.
E. 66 min.
A. 262.4 km
B. 260 km
C. 283.33 km
D. 275 km
E. None of these
A. 4 hours
B. 4 hours 30 min.
C. 4 hours 45 min.
D. 5 hours
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