mdbar321 mdbar321

14-09-2017
Mathematics

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PLz help!!! Look at the picture below for the question.

PLz help Look at the picture below for the question class=

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musiclover10045 musiclover10045

14-09-2017

speed of plane flying east = x

speed of plane flying west = x+75

total speed = 2x+75

distance after 4 hours ( 7-3) = 8x+300

8x+300 = 5460

8x = 5160

x = 5160/8 = 645

speed of plane flying east = 645 km/h

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