Question 221228
Let {{{h}}} = Harry's age now
Then {{{2h}}} = Harry's Father's age now
Harry's age was {{{h - 16}}} 16 years ago
Harry's Father's age was {{{2h - 16}}} 16 years ago
{{{2h - 16 = 4*(h - 16)}}}
{{{2h - 16 = 4h - 64}}}
{{{2h = 64 - 16}}}
{{{2h = 48}}}
{{{h = 24}}}
{{{2h = 48}}}
Harry is 24 now and his Father is 48 now