Question 421513
Let {{{x}}} = Father's age now
Let {{{y}}} = Daughter's age now
given:
(1) {{{ x = 5y }}}
(2) {{{x + 6 =  3*(y + 6) }}}
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There are 2 equations and 2 unknowns, so it's solvable
By substitution:
(2) {{{5y + 6 =  3*(y + 6) }}}
(2) {{{5y + 6 = 3y + 18 }}}
(2) {{{2y + 6 = 18 }}}
(2) {{{2y = 12}}}
{{{y = 6}}}
and
(1) {{{x = 5y}}}
{{{x = 30}}}
The Father is 30 and the daughter is 6