Mathematics
posted by Needer .
Eureka is 9 years younger than Rex. In 3 years Rex will be twice as old as Eureka. How old are they now?

e = r9
(r+3) = 2(e+3)
r+3 = 2(r9+3)
r+3 = 2r12
r = 15
Rex is 15
Eureka = 6
in three years, they will be 18 and 9
Respond to this Question
Similar Questions

Math
2x represents that Clyde is twice (2 times) as old as Bonnie. 6 years from now, Clyde will be twice as old as his cousin Bonnie will be then. If Clyde is now 16 years old, how many years old is Bonnie? 
algebra
A person is 3 times as old as aonther person but in 15 years she will only be 2 times as old. I found the answer the younger person is 15 years old and the older person is 45 years old. But 15 years from now the younger person will … 
math
A. Brad is 12 years older than Sam . If Brad were 8 years older than he is now. he would be twice as old as Sam. How old is Sam now? 
Algebra, HELP IM CLUELESS
Eureka is 16 years younger than Renton. In 3 years Renton will be twice as old as Eureka. How old are they now? 
intermediate algebra
Eureka is 16 years younger than Renton. In 13 years Renton will be twice as old as Eureka. How old are they now? 
Math
the sum of the ages of rex, ben and alfred is 36 years, two years ago, ben was 3 times as old as rex was then, 8 years from now, alfred will be twice as old as ben will be then. find their present age. 
Math
the sum of the ages of rex, ben and alfred is 36 years, two years ago, ben was 3 times as old as rex was then, 8 years from now, alfred will be twice as old as ben will be then. find their present age. 
maths
Mr B is now twice as old as his younger brother. Eight years ago he was three times as old as his younger brother was then. How old is the younger brother now? 
math
Jay is twice as old as Sandy and 2 years younger than Mike Mike is 7 years older than Sandy how old is jay ? 
math
Jay is as twice as old as Sandy and 2 years younger than Mike Mike is 7 years older than Sandy how old is jay?