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kaiteDID
Group Title
Use the three steps to solve the problem.
Two years ago a father was four times as old as his son. Three years from now the father will be only three times as old as the son. How old is each now?
{son is yrs., father is yrs.}
 one year ago
 one year ago
kaiteDID Group Title
Use the three steps to solve the problem. Two years ago a father was four times as old as his son. Three years from now the father will be only three times as old as the son. How old is each now? {son is yrs., father is yrs.}
 one year ago
 one year ago

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ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Let the present age of son be x and the age of father be y. Can u tell me what was the age of the father two yrs ago?
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
no i dont know i am srry
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Subtract 2 from the present age y.
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
so it would be 2y*4 right?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
hmm no. The age of father two yrs ago is y2. And the son,s is x2. Since it is given that the father's age was 4 times the age of son y2=4(x2). Getting it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Is it confusing? If so plz ask.
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
yes it's confusing
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
How old are u nw?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
what was ur age before two yrs?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
U subtracted to frm ur present age to find the age bfore 2 yrs. right?I assumed father's present age to be y. then his age before two yrs wud have been y2. Is is it clear?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
The age of the son bfore two yrs wud hav been x2. Getting it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
sorry? isn't t clear?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Since it is given that the age of the father was 4 times the son's age y2=4(x2)
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Getting it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
What will be the age of the father after three years?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
yup right:)
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
What will be the age of the son?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
Since it is given that the father's age will be three times of the age of the son y+3=3(x+3) getting it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
So u hav two eqns y2=4(x2) y+3=3(x+3) Can u find x and y?
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
y2=4x8 y+3=3x=9
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
y2=4x8 y+3=3x+9 ya right:). Nw solve these equations to find x and y. can u do it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
y2=4x8 what do u get when u add 2 to both sides?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
y2+2=4x8+2 y=4x6
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
y+3=3x+9 What do u get when u subtract 3 from both of the sides?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
hmm no. y+33=3x+93 y=3x+6 Getting it?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
So u have two eqns y=4x6 y=3x+6. Since both 4x6 and 3x+6 are equal to y you can equate them. 4x6=3x+6 Can u find x nw?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
hmm no. 1.Add 6 both sides 2.Subtract 3x both sides. What do u get nw?
 one year ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.0
That is vat u get in left hand side. What do u get in ur right hand side?
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
@robtobey can u help me?
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.2
Solve the following for f and s, the father's and son's current age respectively.\[\left\{\frac{f2}{s2}=4,\frac{f+3}{s+3}\text{=}3\right\}\]Can you solve the above for f and s?
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
idk i dont know how to do it
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.2
Is the following easier?\[\{f2=4(s2),f+3=3(s+3)\}\]
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
i dont know this is all confusing to me
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.2
focus on the equation on the left. f  2 = 4 (s  2) Multiply out the RHS f  2 = 4 s  8 Move 2 to the RHS. f = 4 s  8 + 2 Add 8 and +2 f = 4 s 6 Replace f in the second equation with 4 s 6 f + 3 = 3 (s + 3) (4 s 6) + 3 = 3 (s + 3) Can you solve the above for s and get a number?
 one year ago

robtobey Group TitleBest ResponseYou've already chosen the best response.2
I have to log off now. The answer is\[\{f=42,s=12\} \] You should verify the answer yourself.
 one year ago
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