Question

If a man can cover 12 metres in one second, how many kilometres can he cover in 3 hours 45 minutes? select one:

a. 156 km

b. 162 km

c. 150 km

d. 168 km

Answer 1

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Answer 2

Concept:

Speed is the distance traveled per unit of time.

u = d/t

where u is speed, d is the distance traveled and t is the time.

Given:

Speed of the man, u = 12 m/s

Time, t = 3 hr 45 min = 13500 seconds

Find:

Kilometers covered in 3 hours 45 minutes.

Solution:

From the speed, s = d/t, distance traveled can be calculated as the product of speed and time.

d = ut

d = (12)×(13500) = 162000 m

To convert the distance traveled in meters to kilometers, dividing it by 1000, So,

d = 162 km

Hence, the distance traveled is 162 km. Hence, the correct option is (b) 162 km.

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