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25 votes
The means of six number = 41

Three numbers are 32 , 31 , 42

other three are a,a,a

What sum of 6 numbers

find value of A?

1 Answer

7 votes


\qquad\huge \rm༆ Answer ༄

Let's use the formula to fund mean here ~


\boxed{ \sf mean = (sum \: of \: all \: terms)/(number \: of \: terms) }

That is ;


\qquad \sf  \dashrightarrow \: 41 = (32 + 31 + 42 + a + a + a)/(6)


\qquad \sf  \dashrightarrow \: (41 * 6) = 105 + 3a


\qquad \sf  \dashrightarrow \: 246 = 105 + 3a


\qquad \sf  \dashrightarrow \: 3a = 246 - 105


\qquad \sf  \dashrightarrow \: 3a = 141


\qquad \sf  \dashrightarrow \: a = 141 / 3


\qquad \sf  \dashrightarrow \: a = 47

Therefore the value of a is 47

User Daniil Shevelev
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