Question

the mean of five numbers is 4. after adding one more number, the mean still remains 7. what is the new number? ​

Answer 1

Answer:

the new no. 3 ..

because when u will subtract 7 out of 4 the result is 3

Step-by-step explanation:

HOPE IT HELPS YOU

Answer 2

Step-by-step explanation:

$Mean = \frac{Sum \: of \: Numbers}{Number\: of \: Numbers}$

$4 = \frac{Sum \: of \: Numbers}{5}$

$Sum \: of \: Numbers = 20$

On adding one more number,

$New \: Mean = \frac{Sum \: of \: Numbers + x}{6}$

$7 = \frac{Sum \: of \: Numbers + x}{6}$

$42 = Sum \: of \: Numbers + x$

$42 = 20 + x$

$x = 42 - 26$

$x = 16$

Hence, the New Number is 16

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