A) 34.5
B) \[34\frac{2}{7}\]
C) 35
D) 34
Correct Answer: B
Solution :
[b] Sum of 30 numbers \[=30\times 40=1200\] Sum of 40 numbers \[=40\times 30=1200\] Average of 70 numbers \[=\frac{1200+1200}{70}=\frac{2400}{70}=34\frac{2}{7}\]You need to login to perform this action.
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