Question 329235
Let {{{q}}} = number of quarters she has
Let {{{n}}} = number of nickels she has
given:
(1) {{{q = n + 6}}}
------------------
{{{25q}}} = value of quarters in cents
{{{5n}}} = value of nickels in cents
From (1):
{{{25q = 25n + 150}}}
{{{25q + 5n = 25n + 150 + 5n}}}
{{{25q + 5n = 30n + 150}}}
The total value in cents of the nickels and
quarters is 30 times the number of nickels 
plus 150 cents