Question

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Q1: A man is walking at a speed of 6km per hour. After every km, he takes a rest for 2 minutes. How much time will it take to cover a distance of 4 km?

Answer 1

Step-by-step explanation:

44 minutes time will it take to cover a distance of 4 km?

Answer 2

Answer:

46 minutes

Step-by-step explanation:

He needs to cover 4km in total

splitting the distance into intervals of 1km, 4km= 1+1+1+1

including the 2min rest time,

1km, 2minutes rest, 1km, 2min rest, 1km, 2min rest, 1km.

Time taken to cover every 1km = distance divided by speed =

$\frac{1km}{6km \: perhr} = \frac{1}{6} \: hr \: = \frac{1}{6} \times 60 \: min = 10 \: min$

So, 10min to cover every 1km.

So total time, including the 3 resting periods = 10+2+10+2+10+2+10= (4×10)+(2×3) = 46min