Question

A.M. is 29 .find the missing frequency .x-5,15,25,35,45,55,f-5,7,?,18,5,3​

Answer 1

Given : A.M. is 29

x  5,   15,  25,  35,     45,  55,

f-  5,    7,   ?    ,18,       5,  3​

To Find :  Missing Frequency x

Solution:

x           A= (x - 25)/10        f          fA

5           -2                         5          -10

15           -1                        7             -7

25          0                        ?             0

35          1                        18             18

45          2                        5            10

55          3                         3            9

                                38 + ?            20

29  = 25  +  10 * ( 20 ) / (38 + ? )

=> 4 = 200 / (38 + ?)

=> 38 + ?  = 50

=> ? = 12

missing frequency is 12

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