Question

Flying with the wind, a plane can travel 840 miles in 4 hours. Against the wind, the plane requires 5 hours to fly the same distance. Find the speed of the plane in calm air and the speed of the wind, both in miles per hour.

Answer 1

The speed of the plane in calm air is 210 miles per hour.

The formula for speed is given as:

= Distance / Time

The speed of the plane in calm air will be: = Distance / Time

= 840 miles / 4 hours

= 210 miles per hour

The speed of the plane against the wind will be:

= Distance / Time

= 840 miles / 5 hours

= 168 miles per hour

Read related link on:

https://brainly.com/question/24693300