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A number of particular items have been classified according to their weights. After drying for two weeks the same items have again been weighted and similarly classified. It is known that the median weight in the first weighing was 20.83g. While in the second weighing it was 17.35g. Some frequencies, a and b, in the first weighing and x and y in the second weighing are missing. It is known that a=x/3 and b=y/2. Find out the values of the missing frequencies.
Weights Frequencies
I II
0-5 a x
5-10 b y
10-15 11 40
15-20 52 50
20-25 75 30
25-30 22 28
Daer Ankur,
a=3
b=6
x=9
y=12
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