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  1. Two places P and Q are 162 km apart. A train leaves P for Q and simultaneously another train leaves Q for P. They meet at the end of 6 hours. If the former train travels 8 km/hour faster than the other, then speed of train from Q is
    1. 12
      5
      km/hour
      6
    2. 10
      5
      km/hour
      6
    3. 9
      1
      km/hour
      2
    4. 8
      1
      km/hour
      2
Correct Option: C


Speed of train starting from Q = x kmph
∴  Speed of train starting from P = (x + 8) kmph
According to the question,
PR + RQ = PQ
⇒  (x + 8) × 6 + x × 6 = 162
[Distance = Speed × Time]
⇒  6x + 48 + 6x = 162
⇒  12x = 162 – 48 = 114

⇒  x =
114
=
19
122

= 9
1
kmph
2


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