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The mean of five numbers is 10

I add one more number and the mean is now 11
What number did i add?

2 Answers

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mean of 5 numbers = 10

mean of 6 numbers = 11

therefore, mean= 7 + 13 + 6 + 14 + 10 = 50 = 10

5 5

if one more number make it 11, then

2x=10

2 2

x=5

User Qwertzman
by
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1 vote

Good morning ☕️______

Answer:

=16

___________________

Explanation:


(a+b+c+d+e)/(5) = 10

then ,

a+b+c+d+e = 50

Now, if we add a new number and call it f we will get:


(a+b+c+d+e+f)/(6) =11

then,

(a+b+c+d+e) + f = 66

then f=66-(a+b+c+d+e) = 66-50=16.

:)

User Shishir Anshuman
by
7.6k points

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