5,9,9+x,9+3x,25,34,44. If the median is 19 find x
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Answer:
no. of terms= 7
mean = 19
sum of no. = 19*7
=133.......(1)
but,
sum of no= 5+9+9+x+9+3x+25+34+44
= 135+ 4x.......... (2)
from (1) & (2)
135+4x = 133
4x. = -2
x. = -2/4
x. = -1/2
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