Ava45018 Ava45018

29-12-2017
Mathematics

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Explain how to do this

Explain how to do this class=

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choixongdong choixongdong

29-12-2017

average of 2 numbers is 40
so total = 2 x 40 = 80

300 - 80 = 220

average of remaining 10 numbers = 220/10 = 22

answer
B) 22

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