Round Trip Travel Time Of An fire Brigade


A fire Brigade travels 10 miles at a speed of 50 miles per hour.

How fast must the fire Brigade travel on the return trip if the round-trip travel time is to be 20 minutes?



SherlockHolmes Expert Asked on 3rd October 2015 in Aptitude Question.
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    Answer – 75miles/hour

    For 50 miles it takes 1 hour to travel

    So, for 10 miles it takes   10/50   hours
    = (10/50) *60mins
    = 12minutes

    So return time should be 20-12=8minutes

    Speed=10/8 in miles per minute         [Speed=Distance/Time]
    =(10*60)/8 in mile per hour
    Ans.   75miles/hour

    saikiranchary Scholar Answered on 3rd October 2015.
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