the mean of 6, 10, 11, x, 12, why is 10 also why is more than X find the value of x and y
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1
THANKS FOR THE QUESTION !
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MEAN :
SUM OF ALL NO. / TOTAL NO.
6 + 10 + 11 + X + 12 + Y / 6
39 + X + Y / 6
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BUT MEAN = 10
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10 = 39 + X + Y / 6
10 * 6 = 39 + X + Y
60 = 39 + X + Y
X + Y = 60 - 39
X + Y = 21 .................... equation 1
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Y IS 7 MORE THAN X
Y = X + 7
SUBSTITUTE THIS VALUE IN EQUATION 1
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X + X + 7 = 21
2X + 7 = 21
2 X = 21 - 7
2X = 14
X = 14 / 2
X = 7
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Y = X + 7
Y = 7 + 7
Y = 14
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ANSWER :
X = 7
Y = 14
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tanish4135:
thanks
Answered by
0
mean = sum / total
6+10+11+x+12 /5
39+x/5
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