Question

Vicky is twice as old as Jimmy. Jimmy is four years older than Davidl The sum of their ages is 28. how old is each person?

Answer 1

V is twice as old as J.
Do you know how to write this as an equation?

Answer 2

is means equals by the way

Answer 3

yeah i just dont know what thee formula is

Answer 4

You do know to how write the equation?
V is twice as old as J
V = twice as old as J

Answer 5

We need to figure out how to write the twice as old as J part

Answer 6

What does twice as means?

Answer 7

nevermind i got it

Answer 8

in symbols of course lol
ok

Answer 9

What did you get then?

Answer 10

x+x+4+2(x+4)=28

Answer 11

the answers are 4, 8, and 16 i got it lol k thanks? ii guess hahah

Answer 12

Ok so let me check that
We have V=2J (because twice as means 2 times )
Jimmy is four years older than David
J is 4 years older than David
J=4 years older than David
J=4+D

So we have the sum of their ages is 28
That means Vicky's age+Jimmy's age+David's age=28
V + J + D =28

Now we should put this in terms of one variable so we can solve

You have V=2J and D=J-4 (remember J=4+D)

So Sub these into find J

2J+J+J-4=28

4J-4=28
4J=32
J=8

V=2(8)=16

D=J-4=8-4=4

Yep that is right! good job! :)