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42

Step-by-step Answer
PAGE: 602SET: ExercisesPROBLEM: 42
Please look in your text book for this problem Statement

An air craft carried made a trip to guam and back.

The trip there took hours and the trip back took hours.

Average speed on the return trip is .

Find average speed of the trip to guam.

Let the average speed of the wind be kilometers per hour.

Formula for distance is .

Distance with trip to guam is

Distance with trip to back is

The distances going and coming are equal.

Therefore,

                                   (Simplify)

                              (Divide each side by )

      (Cancel common terms)

Therefore, the average speed of the wind is .

Option B is right choice.



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