The mean monthly salary of 10 members ...

The mean monthly salary of 10 members of a group is Rs. 1445, one more member whose monthly salary is Rs. 1500 has joined the group. Find the mean monthly salary of 11 members of the group.

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Mean monthly salary of 10 members=`1445`
New member's salary`=1500`
New Mean=`((1445xx10)+1500)/11`
=`(14450+1500)/11`
`=15950/11=1450`
hence the mean monthly salary of `11` members is Rs `1450`

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