Juhi travelled a distance of 16 km by bicycle at the speed of 15 km per hour

Juhi travelled a distance of 16 km by bicycle at the speed of 15 km per hour, 20 km by scooter at the speed of 50 km per hour and 50 km by car at the speed of 60 km per hour. The total time (in minutes) to travel these distances was
(A) 144
(b) 138
(c) 88
(d) 114

Anurag Mishra Professor Asked on 27th February 2016 in Maths.
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1 Answer(s)

Answer: (b) 138 min 

Solution:-
Juhi traveled a distance of 16 km by bicycle at the speed of 15 km per hour.
Then, time taken by Juhi = 16 x 60/15
= 16 x 4
= 64 min

She travel 20 km by scooter at the speed of 50 km per hour,
Then, Time taken by her to travel 20 km = 20 x 60/50
= 24 min

She travel 50 km by the car at the speed of 60 km per hour,
Then, time taken by her to travel 50 km = 50 x 60 /60
= 50 mjn

Total time taken by Juhi to travel whole journey = 64 + 24 + 50
= 138 min

Hence, the correct answer is option (b) 138 min.

Anurag Mishra Professor Answered on 27th February 2016.
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