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Question

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

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Solution

Dear Student,

Let T be the sum of the salaries of the 10 people. Then:

1445 = T/10

=> T = 14450

After the other member got added,

T = 14450 + 1500 = 15950

The mean of the 11 people = T/11

= 15950/11 = 1450

Therefore, the mean of the 11 members is Rs.1450.

Regards


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