Respuesta :

The speed of the private jet is 659 miles per hour.

Speed

Speed is the ratio of distance travelled to total time taken. It is given by:

Speed = distance / time

Let a represent the speed of the jet and b represent the speed of the wind. The private jet can fly 2145​ miles in three​​ hours with a tailwind, hence:

(a + b)3 = 2145

a + b = 715  (1)

It can travel 1809​ miles in three​​ hours with a headwind, hence:

(a - b)3 = 1809

a - b = 603   (2)

From equation 1 and 2:

a = 659, b = 56

The speed of the private jet is 659 miles per hour.

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