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What distance (in m) will a train cover in 1 minute traveling at a speed of $72 km / hr ?$

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1200 m

12000 m

1400 m

7200 m

answer is B.

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Detailed Solution

Given,
Time = 1minute
Speed =

72 km / hr

We know that,
Distance = Speed

×

Time.
Substituting the values,

d = 72 km hr × 1 min           [∵ 1km=1000m and 1hr = 60 min]

⇒ d = 72 × 1000 m 60 min × 1 min

⇒ d = 72 × 1000 60 m

⇒ d = 12000 m

Thus, the distance (in m) a train will cover in 1 minute traveling at a speed of

72 k m / h r

will be 12000m.
Therefore, option 2 is correct.

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