Average of six numbers is 20 . If one number is removed, average becomes 15 . number removed ?

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4.Average

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The average of six numbers is $20 .$ If one number is removed, the average becomes $15 .$ What is the number removed ?

A

$5$

B

$35$

C

$112$

D

$45$

Solution

Required number $=$ sum of six numbers $-$ sum of five numbers

$=6 \times 20-15 \times 5=120-75=45$

Standard 13

Quantitative Aptitude

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