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Q.

How long will an aeroplane flying at an average speed of 500 miles per hour take to travel 2750 miles?

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a

5.5hrs

b

4hrs

c

2hrs

d

6hrs

answer is A.

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Detailed Solution

Concept: In the issue above, given an airplane's speed and total amount of travel, we are asked how long it will take the aircraft to fly a specific distance. The distance formula can be used to resolve the aforementioned issue. The distance formula may be written as follows: the distance covered by a particle in a given amount of time is equal to the particle's speed times the sum of its journey times.
Let the speed of the plane be u.
The total distance travelled by the plane at constant speed is D.
And the total time taken be t.
As given, u = 500 miles per hour
D = 2750 miles
Using the basic formula, that is, D =

u \times

t

t = \frac{D}{u}

So,
t =

\frac{2750}{500}

= 5.5 hours.
So, the correct answer is 5.5 hours.
Hence, option 1 is correct.

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How long will an aeroplane flying at an average speed of 500 miles per hour take to travel 2750 miles?