the mean of 10 numbers is 50 if one more number is order then the mean is 50 itself find the added number
Standard :-9th
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48
Let the sum of the ten numbers be a and the new number added be b
Mean = a/10
a/10 = 50
=> a = 500 ------(1)
When new number is added
Mean = 50
=> (a+b)/ 11 = 50
=> a + b = 550
=> 500 + b = 550
=> b = 550 - 500
=> b = 50
The number that is added is 50
Mean = a/10
a/10 = 50
=> a = 500 ------(1)
When new number is added
Mean = 50
=> (a+b)/ 11 = 50
=> a + b = 550
=> 500 + b = 550
=> b = 550 - 500
=> b = 50
The number that is added is 50
gaurav2013c:
brainliest it if helped....
yes for sure
but how to do it
Answered by
12
Answer:
Step-by-step explanation:
Let the sum of 10 numbers be x
And the added number be y.
a/10=50
a=500
a+b/11=50
a+b=550
Added number = 550-500
=50
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