Question

Q.11)Convert the speed of train to km/hour its speed is 25 m/sec also find distance covered by the train in 20 minutes.​
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Try to give Correct Answer :)

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Answer 1

$\huge\sf \pmb{\orange {\underline \pink{\underline{\:Ꭺ ꪀ \mathfrak ꕶ᭙ꫀя \: }}}}$

• The speed of train is 90 km/hour.
• Distance covered by the train in 20 minutes = 30 km

Step-by-step explanation:

Given that:

• Speed of a train = 25 m/sec

To Find:

• Speed of the train in km/hour.
• Distance covered by the train in 20 minutes.
• Converting the speed in km/hr:

In one second distance travelled = 25 m

We know.

• 1 hour = 3600 seconds
• In 3600 seconds distance travelled = (25 × 3600) = 90000 m

We know that.

• 1000 m = 1 km
• 90000 m = 90000/1000 = 90 km
• In 1 hour distance travelled = 90 km

∴ The speed of train is 90 km/hour.

Converting the 20 minutes into hours:

We know that.

• 60 minutes = 1 hour
• 20 minutes = 20/60 = 1/3 hours
• Finding the distance covered by the train in 20 minutes:

We have.

• Speed = 90 km/hour
• Time = 1/3 hours
• We know that.

Distance = Speed × Time

⟶ Distance = 90 × 1/3

⟶ Distance = 30

∴ Distance covered by the train in 20 minutes = 30 km

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Answer 2

$\bf{\underline{\overline{\pink{Given :-}}}}$

• Speed = 25 m/s

• Distance covered = 20 min

$\bf{\underline{\overline{\purple{To \: Find :-}}}}$

• Distance covered.

$\bf{\underline{\overline{\red{Solution :-}}}}$

Distance covered in m/s

⇒ 25 × 60 × 60

⇒ 25 × 3600

⇒ 90,000 m

In km

1000 m = 1 km

90000 m = 90 km

Now,

• According to the question.

20 min = 20/60 hrs

Distance = 90 × 20/60

Distance = 90 × 2/6

Distance = 180/6

Distance = 30 km

$\bf{\underline{\overline{\orange{Therefore ,}}}}$

The distance covered by the train in 20 minutes is $\bold{30 km.}$