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 The mean marks of 10 students in a class is 70. The students are divided into two groups of 6 and 4 respectively.

 The mean marks of 10 students in a class is 70. The students are divided into two groups of 6 and 4 respectively. If the mean marks of the first group is 60, what will be the mean marks of the second group?
In Topics: Tests (preparing, taking, anxiety!)
> 60 days ago

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