An airplane travels at a rate of 250 miles/he with the wind and at a rate of 150 miles against the wind. what is the rate of the wind?

50 miles per hour  is the rate (speed) of the wind.

Step-by-step explanation:

Let consider the variable ‘x’ for speed of wind.  

Below we write two values of the speed of the airplane in the air in terms of ‘x’:

1. Subtract wind speed from airplane speed: 250 - x.

2. Add wind speed to the airplane speed against the wind: 150 + x.

And now, set these above two expressions equal to each other to find x (wind speed),

                                      250 – x = 150 + x

                                      2x = 100

                                     x = 50 miles per hour

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

correct choice is b

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