A man travelled by car from city A to city B at a speed of 24 km/h and returned from city B to city A at 16 km/h. Find his average
speed over the whole journey
This questions was previously asked in
SSC CHSL 30th May 2022 Shift-2
19.5 km/h
Incorrect AnswerExplanation:
- To find the average speed for a round trip, use the formula: \[ \text{Average Speed} = \frac{2 \times \text{Speed}_1 \times \text{Speed}_2}{\text{Speed}_1 + \text{Speed}_2} \]
- Here, Speed_1 = 24 km/h and Speed_2 = 16 km/h.
- Plug the values into the formula: \[ \text{Average Speed} = \frac{2 \times 24 \times 16}{24 + 16} \]
- Calculate the result: \[ \text{Average Speed} = \frac{768}{40} = 19.2 \text{ km/h} \]
- Option 1: 19.5 km/h
- Option 2: 20 km/h
- Option 3: 19 km/h
- ? Option 4: 19.2 km/h - Correct Answer
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By: santosh