The average speed of the plane in calm conditions is 619.35 miles/hour
Average:
Basically, an average refers the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set.
Given,
A plane traveling from Phoenix to Washington, D. C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes.
Here we need to find the average speed of the plane in calm conditions
While we looking into the given question, we have identified that,
Here we have the two timings
They are from time and to time.
The value of the from time 3 hours
And the value of to time 3 hours 12 minutes
So, in order to find the average is calculated as,
=> 3(s+20) = 3.20(s-20)
=> s = 620
=> 3*640 = 1920
=> 3840/(3 + 3.20) = 619.35
So, the average speed of the plane is 619.35 miles/hour
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