The mean of $10$ numbers is $20$ . If $5$ is subtracted from every number, What will be the new mean.

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Solution

$M e a n = 20$

$Total numbers = 10$

$T o t a l s u m = 200$

If 5 is decreased from all numbers
mean subtracting $(10 \times 5)$ from 200 make total sum $= 200 - 50 = 150$

New Mean $= \frac{150}{10} = 15$

Hence New Mean $= 15$

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The mean of 10 numbers is 20. If 5 is subtracted from every number, What will be the new mean.

Mean=20Total numbers=10Total sum=200If 5 is decreased from all numbers mean subtracting (10×5) from 200 make total sum=200−50=150New Mean=15010=15Hence New Mean =15

The mean of $10$ numbers is $20$ . If $5$ is subtracted from every number, What will be the new mean.

$M e a n = 20$

$Total numbers = 10$

$T o t a l s u m = 200$

If 5 is decreased from all numbers
mean subtracting $(10 \times 5)$ from 200 make total sum $= 200 - 50 = 150$

New Mean $= \frac{150}{10} = 15$

Hence New Mean $= 15$