Question

average of 11nos is 55.if two of these nos are 45 and 47.find the average of 9 nos​

Answer 1

Step-by-step explanation:

answer is 57 because average of 11is 55 and there is 45and47no in this 11no. therefore we find remaining 9 numbers so suppose x is sum of 9no so, x+45+47÷11=55

therefore x=519

and x=remaining 9 number

so, average of 9nos =x÷9

so, average of 9nos= 519÷9=57