Shivi drives her car on three different ways to reach the destination. Determine the average speed during this journey.
| Way | Speed (Km/h) | Distance (km) |
| A | 38 | 114 |
| B | 42 | 84 |
| C | 46 | 230 |
Answer & explanation
Correct answer: option 1
We know ,
Time = \(\frac{Distance }{Speed }\)
Time 1 = \(\frac{114 }{38 }\) = 3 hours
Time 2 = \(\frac{84 }{42 }\) = 2 hours
Time 1 = \(\frac{230 }{46 }\) = 5 hours
Average speed = \(\frac{114 + 84 + 230 }{3 + 2 + 5 }\)
= \(\frac{428 }{10 }\)
= 42.8 km/h