Question

An airplane flies 810 km in 1.5 hours. How far will the plane fly in 2.2 hours if it maintains the same air speed?

Answer 1

Answer:

The speed of airplane and the time take are in direct proportion

$= \frac{810}{1.5} = \frac{x}{2.2} \\ =cross \: \: multiplication \\ \\810 \times 2.2 = 1.5 \times x \\ x = \frac{810 \times 2.2}{1.5} \\ x = 1188km$

Answer 2

Answer:

Airplane maintains 1,118 km distance in 2.2 hours.

Step-by-step explanation:

Given that-

Distance (d) = 810 km

Time (t) = 1.5 hours

Speed (v) = ?

We know that-

$Speed = \dfrac{distance}{time}$

           $= \dfrac{810}{1.5}$

Speed = 540 km/hour

Now, second condition:-

time = 2.2 hour

Speed = 540 km/hour

Distance = ?

We know that-

Distance = Time × Speed

               = 2.2×540

Distance = 1,118 km

Hence, airplane maintains 1,118 km distance in 2.2 hours.