Question 1065369
Twice as many dimes as nickels,
{{{D=2N}}}
A dollar in dimes and nickels,
{{{0.1D+0.05N=1}}}
So then,
{{{D-2N=0}}}
{{{0.1D+0.5N=1}}}
So the augmented matrix would be,
{{{(matrix(2,3,1,-2,0,0.1,0.5,1))}}}