Use equations to solve the following questions

Daniel and Travis are twins, but their sister Phillipa is 3 years older. If the sum of their
three ages is 36, how old are the twins?

Question

Use equations to solve the following questions

Daniel and Travis are twins, but their sister Phillipa is 3 years older. If the sum of their
three ages is 36, how old are the twins?

anonymous · Answer

You know how old Daniel and Travis are? ^.^

anonymous · Answer

Of course we don't that's why it's being asked :D
So let's say they're both x years old, okay?

Just tell me when you're ready to jump in ^.^

directrix · Answer

Let D = T (twins have same age)
 Also, T = D
 Let P = D + 3

D + T + P = 36
D + D + D + 3 = 36
Solve for D

@mysteryman123

anonymous · Answer

Who cares about age anyway? ^.^

anonymous · Answer

Let D and T be x, so P=(x+3)
Therefore,x+x+(x+3)=36
3x=33
x=11
The twins are 11 year old