Question 667795
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
A mother’s age{{{highlight(y)}}} is five years greater than twice her son’s age{{{highlight(x)}}} as of the present. 
Fifteen years ago the mother’s age was six times her son’s age.
 y - 15 = 6(x-15)      ||| {{{y = 2x+5}}}
(2x+5) - 15 = 6x - 90
        80 = 4x
        20 = x, the  son's age NOW.  Mother is 45
and...Fifteen years ago...
 {{{30 = 6*5}}}


rstuv method
 1. Read the problem.
 2. Select the unknown.
 3. Translate into an equation: 
 4. Use the rules to solve.
 5. Verify the result