A man travelled a distance of 72 km in 12 hours

A man travelled a distance of 72 km in 12 hours. He travelled partly on foot at 5 km/hour and partly on bicycle at 10 km/hour. The distance travelled foot is
(a) 46 km
(b) 52 km
(c) 50 km
(d) 48 km

Anurag Mishra Professor Asked on 26th March 2016 in Maths.
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1 Answer(s)

Answer: (d) 48 km

Solution:-

Let the distance traveled on foot be x km.

Then, distance traveled on bicycle = (72 –x) km.
So,  X/5 + (72 – X)/10 = 12
(2 X + 72 – X)/10 = 12
X + 72 = 12 x 10
X = 120 – 72
X = 48 km

Then, the distance traveled foot is 48 km.

Hence, the correct answer is option (d) 48 km.

Anurag Mishra Professor Answered on 26th March 2016.
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