the denominator of a fraction is 6 more than its numerator if 2 is added both to the numerator and denominator the fraction becomes 1/2 find the fraction
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x/6x +2/2 = 1/2
x+2/6x+2 =1/2
6x+2=2x+4
4x=2
x=1/2
Answered by
2
ANSWER:
SOLUTION 1 -
Let the numerator be x
and denominator ve (x+6)
After adding 2,
New numeraror = (x+2)
New denominator = (x+6+2)
= (x+8)
New Fraction= 1/2
(x+2)/(x+8)= 1/2
2(x+2) = 1(x+8)
2x+4 = x+8
2x-x = 8-4
x= 4
Hence,
nunerator = x= 4
denominator = (x+6)= (4+6) = 10
Original fraction= 4/10 or 2/5
SOLUTION 2-
now,
let the numerator be x
let the denominator be (x+6)
now the fraction=x/x+6
now,
if 2 is added to both of them
= numerator = x+2
=denominator=x+6+2=x+8
and they become 1/2
ATP,
x+2/x+8=1/2
by cross multiplication .
x+8=2(x+2)
=x+8=2x+4
=x-2x=4-8
= -x= -4
x=4
now by replacing x
= x/x+6=4/10=2/5
you can do it in the either ways
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