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

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

A). 168

B). 162

C). 150

D). 156

The man covers 12 metres in one second.

Convert seconds to hours:

$ 1 \text{ hour} = 60 \times 60 = 3600 \text{ seconds} $

Total time given:

$ 3 \text{ hours } 45 \text{ minutes} = 3 \times 3600 + 45 \times 60 $
$ = 10800 + 2700 = 13500 \text{ seconds} $

Total distance covered:

$ 12 \times 13500 = 162000 \text{ metres} $

Convert metres to kilometres:

$ 162000 \div 1000 = 162 \text{ km} $

Final Answer:

$ \boxed{162} \text{ km} $

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