SOLUTION: Not sure how to put this in an equation form. The sum of Sharon's age an John's age is 70. John is 4 times as old as Sharon. If you let s=Sharon age on the x axis and j=johns

Question 1043784: Not sure how to put this in an equation form.
The sum of Sharon's age an John's age is 70. John is 4 times as old as Sharon.
If you let s=Sharon age on the x axis and j=johns age on the y axis then the problem can be represented by a system of equations.
I don't really need help with the equations, just with getting the word problem into the equation. Thank you!
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I just have to end up with
-------------------
Let = John's present age
Let = Sharon's present age
-----------------------------
(1)
(2)
-----------------
(1)
-----------------
Substitute (2) into (1)
(1)
(1)
(1)
and
(2)
(2)
(2)
---------------
The solution is ( 14,56 )
The system of equations is:
(1)
(2)
------------------------
Here is the plot:

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