Question
A train covers a distance of 10 km in 12 minutes. If is speed is decreased by 5 km/hr the time taken by it to cover the
same distance will be :
Answer: Option D
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Speed = `(10 xx 60/12)` km/hr = 50 km/hr.
New speed = (50 - 5) km/hr = 45 km/hr.
`:.` Time taken = `(10/45)` hr = `(2/9 xx 60) min = 13 1/3` min. = 13 min 20 sec.
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