Question 949216
p,n,d,q how many of each coin;



{{{system(p=5,0.05+0.05n+0.1d+0.25q=12.05,p+n+d+q=95,q-d=5)}}}


{{{system(p=5,0.05n+0.1d+0.25q=12.00,p+n+d+q=95,q-d=5)}}}


{{{system(p=5,0.05n+0.1d+0.25q=12.00,n+d+q=90,q-d=5)}}}


p has already been taken care of and known, not affecting the other part of the system:


{{{system(0.05n+0.1d+0.25q=12.00,n+d+q=90,q-d=5)}}}
Work with this system.