Asked by john
if the arithmetic mean of four numbers is 20 and the arithmetic mean of other six numbers is 10 then,find the arithmetic mean of all the numbers taken as one group
Answers
Answered by
Anoop
Sum = Average (Arithmetic Mean) * No of observation
Sum_1 = 20*4 = 80
Sum_2 = 10*6 = 60
Sum = 80 + 60 = 140
Average = 140/10 = 14
Sum_1 = 20*4 = 80
Sum_2 = 10*6 = 60
Sum = 80 + 60 = 140
Average = 140/10 = 14
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