Question

An aeroplane flies $750$ km in $40$ min. Find the time taken by it to cover a distance of $900$ km.

• A. $24$ minutes
• B. $12$ minutes
• C. $48$ minutes
• D. $36$ minutes

Answer 1

The correct option is C $48$ minutes

$speed=\frac{distance}{time}$

$distance=750km$

$time=40min$

$\Rightarrow speed=\frac{750}{40}=18.75km/min$

Now to cover of distance of 900 km. we consider

$distance=900km$

Using the formula, we get

$\Rightarrow 18.75=\frac{900}{time}$

$\Rightarrow time=\frac{18.75}{900}$

$\Rightarrow time=48minutes$