Question

Roshan travels 45 km in 54 minutes.How many minutes will he take to travel 70 km?

Answer 1

45 km covered in 54 minutes
1 km covered in 54/45 minutes
70 km covered in {(54/45)×70} minutes
=84minutes(ans)

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Answer 2

Roshan will travel 70 km in 84 minutes or 1 hour 24 minutes.

Step-by-step explanation:

It is given that Roshan travels 45 km in 54 minutes.

Formula for speed is

$Speed =\dfrac{Distance}{Time}$

Using the above formula we get

$Speed =\dfrac{45}{54}$

$Speed =\dfrac{5}{6}$

The speed of Roshan is 5/6 km/minute.

We need to find the time taken by him to travel 70 km.

$Time =\dfrac{Distance}{speed}$

$Time =\dfrac{70}{\frac{5}{6}}$

$Time =70\times \dfrac{6}{5}$

$Time =84$

Therefore, he will travel 70 km in 84 minutes or 1 hour 24 minutes.

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