174k views
4 votes
If is added to both numerator and denominator of a fraction,the fraction become 1/2 if 8 is added to both, the fraction become 2/3 what is the fraction

User Pasine
by
3.3k points

1 Answer

4 votes

Answer:

The fraction is
(6)/(13) .

Explanation:

There is a data missing in the question so the complete question is below:

If 1 is added to both numerator and denominator of a fraction,the fraction become 1/2 if 8 is added to both, the fraction become 2/3 what is the fraction?

Now, to find the fraction.

Let the fraction be
(x)/(y) .

If 1 is added to both numerator and denominator of a fraction,the fraction become 1/2.


(x+1)/(y+1)=(1)/(2)

By cross multiplying we get:


2x+2=y+1

Subtracting both sides by
1 we get:


2x+1=y


y=2x+1 ......(1)

Now, if 8 is added to both, the fraction become 2/3:


(x+8)/(y+8) =(2)/(3)

By cross multiplying we get:


3x+24=2y+16

Subtracting both sides by 16 we get:


3x+8=2y

Substituting the value of
y from equation (1) we get:


3x+8=2(2x+1)


3x+8=4x+2

Adding both sides by 2 we get:


3x+6=4x

Subtracting both sides by 3
x we get:


6=x


x=6.

Now, substituting the value of
x in equation (1):


y=2x+1\\y=2* 6+1\\y=12+1\\y=13.

Therefore, the fraction is
(6)/(13) .

User John Owen
by
3.7k points