SOLUTION: Jon is three time as old as Cal, While Ron is 12 years older than Cal. If Jon and Ron are twins, how old is each of the three people?

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Question 500108: Jon is three time as old as Cal, While Ron is 12 years older than Cal. If Jon and Ron are twins, how old is each of the three people?
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
J = Jon's age
R = Ron's age
C = Cal's age
.
J = R because they are twins.
.
R = C+12
or
C = R-12
.
J = 3C
so
R = 3C
.
R = C+12
3C = C+12
2C = 12
C = 6
.
J = 3C
J = 3(6)
J = 18
.
J=R
R=18
.
Always check your work.
In this case, is Ron 12 years older than Cal?
Yes.
.
Answer:
Jon is 18.
Ron is 18.
Cal is 6.