SOLUTION: at present father's age is thrice that of his son 6 years back his age was four times than that of his son .what will be the ratio of their ages after 6 years ?

Question 945176: at present father's age is thrice that of his son 6 years back his age was four times than that of his son .what will be the ratio of their ages after 6 years ?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
let f = father's present age
let s = son's
:
Write an equation for each statement
:
At present father's age is thrice that of his son.
f = 3s
6 years back his age was four times than that of his son.
f - 6 = 4(s-6)
f - 6 = 4s - 24
f = 4s - 24 + 6
f = 4s - 18
Replace f with 3s from the 1st statement
3s = 4s - 18
18 = 4s - 3s
s = 18 yrs is son's age
then
3(18) = 54 yrs is father's age
:
What will be the ratio of their ages after 6 years?
then dad will be 60 and son will 24
60:24 reduced to 5:2 ratio
RELATED QUESTIONS
The age of Anu�s father is four times his age.If 5 years ago,the fathers age was seven... (answered by josgarithmetic)

Five years ago, the age of the father was thrice the age of his son. In five years time,... (answered by josmiceli)

ten years ago the age of a father was four times of his son . Ten years hence the age of... (answered by Earlsdon)

The age of father is twice the square of the age of his son . Eight years hence ,... (answered by richwmiller)

after five year, the age of a father will be thrice the age of his son, whereas five... (answered by JulietG)

Three years back the age of a father was 24 years more than his son. At present the... (answered by ankor@dixie-net.com)

Four years ago, the father's age was three times the age of his son., The total of the... (answered by josmiceli)

If the Fathers age is 5 times his son's age. 4 years back the father was 9 times older... (answered by Theo,ikleyn,kiks)

The present age of a father is four times that of his son, in five years the father's age (answered by stanbon)