self Maths Puzzle

A cyclist drove one kilometer, with the wind in his back, in three minutes and drove the same way back, against the wind in four minutes. If we assume that the cyclist always puts constant force on the pedals, how much time would it take him to drive one kilometer without wind ?

Read Solution (Total 1)

ANSWER : 3.43 min

SOLUTION :

assume speed of cyclist & wind be x & y respectively
Equating relative speed in both case we get
x + y = 1/3
x - y = 1/4
adding both equation we get
x = 7/24 km/min
So 1 km in 24/7 min = 3.43 min
13 years agoHelpfull: Yes(3) No(1)

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