the object travel 50km with 8km/h and then final 50km with 120km/h what is the speed of object for this 100km by ?
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Answer:
hey the ans is very simple
Explanation:
15 km/hr
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avg.speed is distance upon time
50+50/(50/8+50/120)
100/(6.25+0.416)
100/6.666...
approximately 15km/hr
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