if the mean of 3,5,6,2 and a is b and the mean of 3,5,6,2,a and b is a then find the values of a and b
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The mean of 3,5,6,2, and a is b
( 3+5+6+2+a) / 5 = b
16+a = 5 b
5 b - a = 16
a = 5 b - 16 ------------------------ (1)
The mean of 3,5,6,2, a and b is a
(3+5+6+2+a+b) / 6 = a
16 + a + b = 6 a
16 + b = 5 a
from (1)
16 + b = 5 ( 5 b - 16)
16 + b = 25 b - 80
16 + 80 = 25 b - b
96 = 24 b
b = 96 / 24 = 4
a = 5 (4) -14
a = 20 - 14 = 6
Answer a = 6 & b = 4
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is answer....hope it will help
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