9
Question
Ram goes from his home to his friend's home. His friend's home is 2000 m away from his home. How many kilometre did he travel to go and come back to his home?
Ram goes from his home to his friend's home. His friend's home is 2000 m away from his home. How many kilometre did he travel to go and come back to his home?
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Solution
The correct option is A 4 km
We know that,
1 km = 1000 m
or
1000 m = 1 km
So,
2000 m = 2 × 1000 m
= 2 × 1 km
= 2 km
So, Ram has to cover 2 km to go to his friend's home and to return back, he has to again cover 2 km.
In total, Ram covers 2 km + 2 km = 4 km
We know that,
1 km = 1000 m
or
1000 m = 1 km
So,
2000 m = 2 × 1000 m
= 2 × 1 km
= 2 km
So, Ram has to cover 2 km to go to his friend's home and to return back, he has to again cover 2 km.
In total, Ram covers 2 km + 2 km = 4 km
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