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saikiranchary loves solving puzzles at PuzzleFry.com. I am proud PuzzleFry member and like my time invested in solving brain teasers.
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a and b are same i.e it is one with two names a and b
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Answer – 75miles/hour
EXPLANATION–
For 50 miles it takes 1 hour to travelSo, for 10 miles it takes 10/50 hours
= (10/50) *60mins
= 12minutesSo return time should be 20-12=8minutes
Speed=10/8 in miles per minute [Speed=Distance/Time]
=(10*60)/8 in mile per hour
=75
Ans. 75miles/hourThis answer accepted by SherlockHolmes. on 4th October 2015 Earned 20 points.
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