A) 35
B) 40
C) 25
D) 30
Correct Answer: A
Solution :
\[\frac{{{x}_{1}}+{{x}_{2}}+...+{{x}_{25}}}{25}=\overline{x}=40\] \[{{x}_{1}}+{{x}_{2}}+...+{{x}_{25}}=1000\] \[{{x}_{2}}+{{x}_{2}}+...+{{x}_{25}}=60+A=\overline{x}\times 25\] \[1000-60+A=39\times 25=975\] \[A=975-940=35\]You need to login to perform this action.
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