Question

Sum of the numerator and the denominator of a fraction is 12. If the denominator is increared

by 3 then fracton becomes 1/2. Find the fraction.​

Answer 1

Explanation:

Let call our fraction xy, we know that:

x+y=12

and

xy+3=12

from the second:

x=12(y+3)

into the first:

12(y+3)+y=12

y+3+2y=24

3y=21

y=213=7

and so:

x=12−7=5

so the fraction will be 5/7 .