Question 680949
Let n be the number of nickles and q be the number of quarters
You are told
{{{q = n + 5}}}
{{{25q + 5n = 425}}}
So
{{{25(n+5) + 5n = 425}}}
{{{25n + 125 + 5n = 425}}}
{{{30n = 300}}}
{{{n = 10}}}
If n = 10, the q = 10+5 = 15

Do 15 quarters and 10 nickels total 4.25??