tyre2k17 tyre2k17

11-05-2017
Mathematics

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Find x if the average of 20,20,19,13 and x is 16.

A. 9

B. 8

C. 10

D. 6

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mreijepatmat mreijepatmat

11-05-2017

AVERAGE = (20+20+19+13+ X) / 5= 16

(72+X)/5 = 16 ===> 72+X = 80 ===> X = 80-72 ==> X = 8

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