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 a group?
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162
sum of the salaries of 10 members/10= mean
sum of 10 members salaries = 10×1445=14450---(1)
if another member joined whose salary is 1500
then
sum of 11 members salaries = (1)+1500=15950----(2)
new mean = (2)/11
=15950/11
=Rs1450
sum of 10 members salaries = 10×1445=14450---(1)
if another member joined whose salary is 1500
then
sum of 11 members salaries = (1)+1500=15950----(2)
new mean = (2)/11
=15950/11
=Rs1450
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38
this may help u........
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