Mohan finishes a journey by scooter in 5 hours. He travels the first half of the journey at 30 km/h and the second half of the journey at 20 km/h. The distance covered by him is:
Answer & explanation
Correct answer: option 3
Average Speed = \(\frac{2 × S1 ×S2 }{S1 + S2}\)
= \(\frac{2 × 30 ×20 }{30 + 20}\)
= \(\frac{1200 }{50}\)
= 24 km/h
Distance = Speed × Time
= 24 × 5
= 120 km