Home » Aptitude » Speed, Time and Distance » Question
  1. 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.
    1. 8 km
    2. 7 km
    3. 6 km
    4. 9 km
Correct Option: C

If the required distance be x km, then

x
x
=
1
342

⇒ 
4x − 3x
=
1
122

⇒ 
x
=
1
⇒x = 6 km
122


Second Method :
Here S1 = 4, t1 = x
S2 = 3, t2 = x +
1
2

S1t1 = S2t2
4 × x = 3x +
1
2

4x – 3x =
3
x =
3
22

Distance =4 ×
3
= 6 kms
2



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