Two cities, Delhi and Jaipur, are 360 km apart. A car goes from Delhi to Jaipur at a speed of 80 km/h and returns to Delhi from Jaipur using the same route at a speed of 120 km/h. What is the average speed of the car?
Answer & explanation
Correct answer: option 4
Average speed = \(\frac{2 ×S1 × S2}{S1 + S2}\)
= \(\frac{2 × 80 × 120 }{80 + 120 }\)
= 96 km/h