Question 1088588
{{{system(p+5n+10d=257,n/p=4,d=p+4)}}}


{{{p+5(4p)+10(p+4)=257}}}

{{{p+20p+10p+40=257}}}

{{{31p=257-40}}}

{{{31p=217}}}

{{{highlight_green(p=7)}}}, and you can find n and d yourself...