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A distance is covered in 2 hours 45 min at 4 km/hr How much time will be taken to cover it at 16.5 km/hr?

40 min.
41 min. 15 sec.
45 min.
90 min.

Correct Answer: 40 min.

Explanation:

Distance = (4 x 11/4 )km.
= 11 km.
∴ Req. Time = 11km / (33/2) km/hr
= 2 x (11 / 33) hr.
=(2 / 3) x 60 minutes
= 40 minutes

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