Question
I walk a certain distance and ride back taking a total time of 37 minutes. I could walk both ways in 55 minutes. How long would it take me to ride both ways ?
Answer: Option A
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Let the distance be `x` km. Then,
(Time taken to walk `x` km) + (Time taken to ride `x` km) = 37 min.
`rArr `(Time taken to walk 2`x`km) + (Time taken to ride 2`x`km) = 74 min.
But , time taken to walk 2`x` km = 55 min.
`:.` Time taken to ride 2`x`km = (74 - 55) min = 19 min.
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