Question

The average of 30 number is 20. If two number namely 38 and 30 are discard then the average of remaining number is ?

Answer 1

Answer:19

Step-by-step explanation:

Let avg. Of remaining no. Be x then

28×X=30×20-38-30

X=532/28

=19

Answer 2

Average of 30 number = 20
Then sum of 30 numbers = 30 x 20 = 600
If two numbers are subtracted = 600-(38+30)=600-68=532

Now total number after subtracted = 30-2=28
Average of remaining numbers =532/28=19

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