6% of x is root of equation x^2-6x+9=0, then x = ?

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04 Oct 2011 Percentage

6% of x is root of equation x^2-6x+9=0, then x = ?

OPtion

1) 10
2) 20
3) 30
4) 40
5) 50
6) 60
7) 70
8) 80
9) 90
10) 100

Solution

Root of the given equation = 3
according to the given condition 6x/100 = 3
or x = 50

Correct Option: 5 Best Solution (14)

Amit Nathani   12 years AGO

x^2-6x+9=0
(x-3)^2=0
x=3
6%=3
so,1%=3/6=1/2
so,100%=100*(1/2)=50

Like? Yes (3) | No (2)  

Shikha   12 years AGO

I think there is some confusion in qn.
one x=3 , other x=50.

x^2-6x+9=0,
then x=3
AS per given condition
6% of x=3
then x=50

Like? Yes (2) | No (1)  

shubham pratap singh   12 years AGO

root of equation is 3 and 6x/100=3 hence answer is 50

Like? Yes (1) | No   

Palanivel C   12 years AGO

Root of the equation is 3 6 % of x = 3. Hence x = 50

Like? Yes (1) | No   

vora chirag   12 years AGO

root of eq.=3
so,
->6% of x=3
->(6*x)/100=3
->x=50

Like? Yes (1) | No   

Dr.Dipin Singh   12 years AGO

root of equation x^2-6x+9=0 is 3.
so
6% of x =3
then
x= 3*100/6=50 ... option 5

Like? Yes (2) | No (2)  

Dimple   12 years AGO

x^2-6x+9=0; x=3
Further
6% of x =3, x=50

Like? Yes (2) | No (2)  

saurav kumar sinha   12 years AGO

root of euation x^2-6x+9=0 i.e (x-3)^2 is 3
so given 6% of x is 3
therfore 6/100*x=3
so x=3*100/6 =50

Like? Yes (1) | No (2)  

kalirathinam   12 years AGO

6% of x = 3,
6x/100 = 3
therefore, x=50

Like? Yes (1) | No (2)  

dharmil   12 years AGO

50.
root of the equation is 3.
6 % is 3.
then 100% is 50.

Like? Yes (1) | No (3)  

susmit   12 years AGO

root of the given eqn is 3
so x=50

Like? Yes (1) | No (3)  

sridhar reddy   12 years AGO

x^2-6x+9=0
(x-3)^2=0
x-3=0
x=3 is a root of x^2-6x+9=0
6% of x is 3
6x/100 = 3
6x = 300
x=300/6
x=50

Like? Yes (1) | No (3)  

Gunaseelan   12 years AGO

Root of the equation x^2-6x+9 is 3.
Given (6/100)*x=3
x=300/6
x=50

Like? Yes (1) | No (3)  

srilatha   12 years AGO

The roots of gven euq' are 3,3
then 6% x=3*100/6=50

Like? Yes (1) | No (3)