Question 900503
d=n+8,
2n=q
5*n+10*d+25*q=470

5*n+10*(n+8)+25*2n=470
5n+10n+80+50n=470
65n=390
n=6
d=14
q=12
check
5*n+10*(n+8)+25*2n=470
5*6+10*14+25*12=470
30+140+300=470
ok