Question

the average speed of an aeroplane is reduced by 60km/hr, it would take 24 minutes more to cover a certain distance. But if the speed is increased by 40km/hr, it would take 12 minutes less to cover the same distance. Find the average speed of the aeroplane.​

Answer 1

Answer:

2.7km / min is the average speed of aeroplane

Answer 2

The average speed of the aeroplane is "3290.4 $\dfrac{km}{hr}$".

Step-by-step explanation:

We know that,

Average speed = $\dfrac{Total distance}{Time}$

= $\dfrac{2.78+12}{24+12}$ × 60

= 914 $\dfrac{m}{s}$

= $914 \times \frac{18}{5} \dfrac{km}{hr}$

= $3290.4 \dfrac{km}{hr}$

Hence, the average speed of aeroplane is 3290.04 $\dfrac{km}{hr}$.

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