Question

The average of 5 quantities is 6. The average of three of them is 4. What is the average of remaining two numbers?

Answer 1

heya dear.....
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as we know
average=Sum of observation/no of observation

6= sum of observation/5
so sum of observation= 30
so sum of three + sum of two observation= 30
so (4*3)+sum of two observation= 30
sum of two observation= 30-12=18
so it's average= 18/2= 9
so 9 is answer

hope it's help you

Answer 2

Hi

Average of 5 is 6

So

X/5 = 6

= 6*5

= 30 (sum)

Out of this average of 3 of them is 4

So x/3 = 4

4*3

12

So sum of 2 observations

Is 30 - 12 = 18

Now their average is

18/2

= 9

Hope it helps u

Cheers