If a man travels p hours at an average rate of q miles per hour, and then r hours at an average rate of s miles per hour, what is his overall average rate of speed?

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19-05-2014
Mathematics

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If a man travels p hours at an average rate of q miles per hour, and then r hours at an average rate of s miles per hour, what is his overall average rate of speed?

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soniaagarwal09 soniaagarwal09 · Answer 1 · 2014-05-19T14:05:07-04:00

soniaagarwal09 soniaagarwal09

19-05-2014

Total miles traveled in p hours = p*q miles and
Total miles traveled in r hours = r*s miles
so, average rate of speed = total miles traveled / number of hours
=[{(p*q)+(r*s)} / (p+r)] miles per hour

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