Question 1179308
What total value?  Dollars or in cents?


d dimes
q quarters
{{{2d-q=5}}}
{{{q=2d-5}}}


Assuming you are given  1975 CENTS, then  {{{10d+25(2d-5)=1975}}}, and you can do the rest.



If the missing money unit is "dollar", and that value is really $1975, then this means  197500 cents.  You know what to do.
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{{{10d+25(2d-5)=197500}}}

{{{2d+5(2d-5)=39500}}}

{{{12d-25=39500}}}

{{{12d=39525}}}

{{{d=3293.75}}}---------the description of the problem(probably) is wrong.


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{{{10d+25(2d-5)=1975}}} if it WERE actually cents

{{{2d+5(2d-5)=395}}}

{{{12d-25=395}}}

{{{12d=420}}}

{{{highlight(d=35)}}}---------the number of DIMES