Arithmetic mean of 5 numbers is 27 and if we lost one number then arithemetic mean is 25 than find the number
Answers
Answered by
1
a+b+c+d+e/5 = 27
a+b+c+d+e = 135
Now, lets remove e.
a+b+c+d/4 = 25
a+b+c+d = 100
Missing number = 135 - 100 = 35.
a+b+c+d+e = 135
Now, lets remove e.
a+b+c+d/4 = 25
a+b+c+d = 100
Missing number = 135 - 100 = 35.
Answered by
0
mean=27. (given)
mean=sum of all number /5
27=sum of all number /5
135=sum of all number
(let's the number which is lost is x)
therefore, new sum is 135-x
new mean is 135-x/4. which is given as 25
25=135-x/4
100=135-x
x=135-100
x=35
therefore, number is 35
Similar questions