An aeroplane covers a certain distance at a speed of $500 k m h^{- 1}$ in $2 h o u r s$ . To cover the same distance in $1 h o u r$ , it must travel with a speed of ________ $k m h^{- 1}$ .

500

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1000

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1500

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2000

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Solution

The correct option is B $1000$
Given:
Speed of the aeroplane = $500 k m h^{- 1}$
Time taken by the aeroplane to cover the distance = $2 h o u r s$
We know that
$D i s t a n c e = (S p e e d) \times (T i m e)$
Hence $D i s t a n c e \Rightarrow 500 \times 2 = 1000 k m$
To cover the same distance, i.e 1000 km in 1 hour, the speed required is
$\Rightarrow$ $\frac{1000 k m}{1 h}$ = $1000 k m h^{- 1}$

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An aeroplane covers a certain distance at a speed of 500 km h−1 in 2 hours. To cover the same distance in 1 hour, it must travel with a speed of ________ km h−1.

An aeroplane covers a certain distance at a speed of $500 k m h^{- 1}$ in $2 h o u r s$ . To cover the same distance in $1 h o u r$ , it must travel with a speed of ________ $k m h^{- 1}$ .