Question

find the average of 10items if the average of first item is 30 and rest 20​

Answer 1

Answer:

this is your answer

Step-by-step explanation:

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Answer 2

$\LARGE{ \underline{\underline{\sf{To\:find:}}}}$

The average of ten items .

$\LARGE{ \underline{\underline{\sf{Formula:}}}}$

Average= $\dfrac{sum\:of\:values}{number\:of\:values}$

$\LARGE{ \underline{\underline{\sf{ANSWER:}}}}$

Average=$\dfrac{30+20+20+20+20+20+20+20+20+20}{10}$

$=\dfrac{210}{10}=21$

$\boxed{\red{\bf{Hence\:,the\: average\:=21}}}$