A train covers a distance of 10km in 12 minutes. If its speed isdecreased by 5 km/hr, the time taken

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A train covers a distance of 10
km in 12 minutes. If its speed is
decreased by 5 km/hr, the time
taken by it to cover the same distance will be :

(1) 10 minutes
(2) 13 minutes 20 sec
(3) 13 minutes
(4) 11 minutes 20 sec
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