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Doctors Medicines MCQs Q&A

  1. 140 km/h
  2. 126 km/h
  3. 156 km/h
  4. 134 km/h
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1 Answers

Option 4 : 134 km/h

Given 

The distance b/w P and Q = 485 km

Speed of P = 60 km/hr

Formula used

Distance = Relative Speed × Time

Relative Speed = P + Q

Calculation:

Let the speed of Q be x km/hr

⇒ 485 = (60 + x) × 2.5

⇒ 194 - 60 = x

⇒ x = 134 km/hr

∴ The required answer is 134 km/hr

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