Question 900368
Micheal:  m years old NOW
Luis: (m-28)
m - 17 = 5(m-28 - 17)
m - 17 = 5(m-45)
m - 17 = 5m + 225
  208 = 4m
{{{  highlight_green(52) }}}  = m, Micheal's age NOW. Lusi is NOW  24 {{{52-28}}}
and..17years ago..
  35 = 5*7