The mean of ten no. Is 58 th emean of on no. Is 40 then what is the mean of other nine
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Answer:
Explanation:
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
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