the mean of three no s is 10 more than the least of the no s and 15 less than

sum is 30 and the numbers are 0,5,25
11 years agoHelpfull: Yes(6) No(0)
Let the 3nos be x,y,z.
Mean is 'a'.
Now mean for 3nos is (x+y+z)/3=a.......(1)st eq
x be the least no., so a=x+10
z be the greatest no., so a=z-15
Given that y=5.
substitute a=x+10, so x+5+z=3(x+10)
solving this we get x=(z-25)/2
now substitute x value in eq(1) we get z=25, so a=(25-15)=10
value of x=a-10=0.
Now three nos x=0,y=5,z=15
Sum of 3nos=0+5+25=30.
Solution : 30
11 years agoHelpfull: Yes(3) No(0)
it will be 0,5,25..... There is a calculation error in the previous one. And the sum of numbers will be 30
11 years agoHelpfull: Yes(2) No(0)
Mean Should by taken as Mean= (X+Y+Z)/3 ....
11 years agoHelpfull: Yes(1) No(0)
(x+y+z)/3=10+x
(x+y+z)/3=z-15
given y=5
and solving we get
z-2x=25
2z-x=50
so we get x=0 y=5 z=25
11 years agoHelpfull: Yes(1) No(1)
let the least no be x and
the greatest no be z
given (x+y+z)/3=10+x
(x+5+z)/3=10+x
x+5+z=30+3x
z=25+2x
if x=0
z=25 which is greater than 15
(0+5+25)/3=30/3 which is =10+0
so, the answer is 30
11 years agoHelpfull: Yes(1) No(0)
Ans is 105
let Three numbers X,Y,Z
Then mean= (3X+Y+Z)
From this,
X+10=Mean;
Z-15=Mean;
On solving We get,
X=Z+25
Median is 5 i.e. y=5
Now put the values
Simply X+Y+Z=105
11 years agoHelpfull: Yes(0) No(7)
let x
11 years agoHelpfull: Yes(0) No(4)
the 3 nos are 0,5,25
sum=30
11 years agoHelpfull: Yes(0) No(0)
0+25+5 = 30 Ans.
11 years agoHelpfull: Yes(0) No(0)

the mean of three no.s is 10 more than the least of the no.s and 15 less than the greatest of the three.if the median of three nos is 5 then the sum of three is