A) 48
B) \[82\frac{1}{2}\]
C) \[50\]
D) \[80\]
Correct Answer: C
Solution :
[c] Sum of 100 items \[=49\times 100=4900\] Sum of items added \[=60+70+80=210\] Sum of items replaced \[=40+20+50=110\] New sum \[=4900+210-110=5000\] \[\therefore \] Correct mean \[=\frac{5000}{100}=50\]You need to login to perform this action.
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