the mean of 3 numbers is 8. the mean of those 3 numbers and x is 7. find x.
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x is 4
because,
(a+b+c)/3=8
then,(a+b+c)=24
then,(a+b+c+x)/4=7
so,(a+b+c+x)=28
x=28-(a+b+c)
x=28-24. (a+b+c=24)
x=4
because,
(a+b+c)/3=8
then,(a+b+c)=24
then,(a+b+c+x)/4=7
so,(a+b+c+x)=28
x=28-(a+b+c)
x=28-24. (a+b+c=24)
x=4
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