Question

An aeroplane flies from A to B at the rate of 500km/hr and comes back from B to A at the rate of 700km/hr. What is the average speed of the aeroplane? By using mean formula.​

Answer 1

600 km/hr

Explanation:

We'll use the mean formula, which is the sum of terms over the number of terms.

For this question, the sum of the terms is (500+700), and the number of terms is 2.

So the average speed is

`(500+700)/(2)\\\\=(1200)/(2)\\\\=600`(km/hr)