Five years ago ,a father was four times as old as his son.In five years time the father will be twice as old as the son.If x and
y are the present ages of the father and the son respectively,the equation relating x and y are: Please I need an explanation
The options are
A: 4y-x=0;x-2y=0
B: 4y-x=15;x-2y=5
C: 4y-x=25;x-2y=5
D: x-4y=15;y-2x=5
The first step is to combine the parts of the numerator and denominator into one rational expression each. Those will have the same denominator, so their ratio is the ratio of their numerators.