SOLUTION: Five times Jane's age plus two times Fred's age equals 51. Jane is also three times Fred's age. How old is Fred?

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Question 1150696: Five times Jane's age plus two times Fred's age equals 51.
Jane is also three times Fred's age.
How old is Fred?
Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Jan, 3f
5%2A3f%2B2f=51
Solve.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Five times Jane's age plus two times Fred's age equals 51.
Jane is also three times Fred's age.
How old is Fred?
-----------
5J + 2F = 51
J = 3F
----
Sub for J in the 1st equation.