average of 60 numbers is 55.when 10 more numbers are included,the average of 80 numbers becomes 75.find the average of 10 numbers.
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YOUR ANSWER IS 60*55.
80*75 YOUR ANSWER WILL BE
60*55=3300. 80*75=6000=6000+3300=9300
=9300/10=930 HERE IS YOUR ANSWER 930
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