A man travels 100 miles at 20 miles per hour, 60 miles at 30 miles per hour and 80 miles at 10 miles per hour, what is his average rate for the three trips?

18 miles per hr

17 miles per hr

20 miles per hr

16 miles per hr

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উত্তর: 16 miles per hr

Time travelled at 20 miles//hr = 100/20 = 5 hrs Time travelled at 30 miles//hr = 60/30 = 2 hrs Time travelled at 10 miles//hr = 80/10 = 8 hrs Total time travelled = 5 + 2 + 8 = 15 hrs Total travelled = 100 + 60 + 80 = 240 miles Average rate = 240 / 15 = 16 miles per hour

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সম্পর্কিত বিষয় সমূহ

সম্পর্কিত অন্যান্য প্রশ্ন

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