Question

Average of a list of 10 numbes is 0. If 72 and -12 added to the list then what wil be the new average​

Answer 1

$\huge\bigstar\sf\red{Answer:}$

$\sf{Average=\dfrac{Sum \ of \ observations}{Total \ observation}}$

$\sf{According \ to \ first \ condition. }$

$\sf{\dfrac{Sum \ of \ 10 \ numbers}{10}=0}$

$\sf{\therefore{Sum \ of \ 10 \ numbers=0}}$

$\sf{According \ to \ the \ second \ condition. }$

$\sf{New \ average=\dfrac{(Sum \ of \ 10 \ numbers)+72-12}{12}}$

$\sf{\therefore{New \ average=\dfrac{0+72-12}{12}}}$

$\sf{\therefore{New \ average=\dfrac{60}{12}}}$

$\sf{\therefore{New \ average=5}}$