Question

Average of 5 numbers is 20 of each number is multiply with 2

Answer 1

average is 20

lets say 5 no.s is 1,2,3,4,5

so average are as

( 1+2+3+4+5)/5=20

if multiplied by 2

then it would b

(1+2+3+4+5)*2/5=20

average is 10

Answer 2

average is 20

lets say 5 no.s is 1,2,3,4,5

so average are as

( 1+2+3+4+5)/5=20

if multiplied by 2 

then it would b

(1+2+3+4+5)*2/5=20

average is 10