Please help me guys. It's a lot urgent
The mean of 3 numbers a,b and c is 8 and mean of 5 numbers a,b,c,d,e is 15. Find the mean of d and e.
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(a+b+c)/3=8
a+b+c = 8*3=24............(1)
(a+b+c+d+e )/5=15
a+b+c+d+e =15*5=75......(2)
put (1) in (2)
24+d+e=75
d+e=75-24
d+e =51
mean = (d+e)/2
=51/2
20.5
HOPE THIS ANSWER HELP YOU
THANK YOU
a+b+c = 8*3=24............(1)
(a+b+c+d+e )/5=15
a+b+c+d+e =15*5=75......(2)
put (1) in (2)
24+d+e=75
d+e=75-24
d+e =51
mean = (d+e)/2
=51/2
20.5
HOPE THIS ANSWER HELP YOU
THANK YOU
rehannadeem2007:
how did 2 come there
where
in d+e/2
Its mean i.e average = total outcomes/ no. of outcome . there are two outcomes (d,e) and total outcomes (d+e) . Did you get it??
I meant how did 2 come there
oh I understood
thanks a lot
devashish I followed you
thanks
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