average of 5 numbers is 35 and average of 7 numbers (2 new numbers are added) is 25. Sum of the 2 newly added numbers will be
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Step-by-step explanatio
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Step-by-step explanation:
Average of five numbers is 35
Let x be the sum of five nos
x/5=35
Therefore, x=175
Let the sum of two new nos added be y
(175+y)/7=25
175+y=25x7
y=175-175
y=0
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