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Jan 20, 2018
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Mathematics
high-school
Seb OH
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1
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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
Chris Hopman
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Jan 24, 2018
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Chris Hopman
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