A travels 15 km with a speed of 30 km/h. He travels another 25 km with a speed of 10 km/h. What is his average speed for the entire journey?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 40/3 km/hr
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Understanding |
Application |
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Given: A travels 15 km with a speed of 30 km/h and travels another 25 km with a speed of 10 km/h. |
Total Time = 15/30 + 25/10 = 3 hours Hence, Average speed = (15 + 25)/3 = 40/3 km/hr |