Question 1171235
Jason began with some m amount of money.


Bought books:
The "extra $10" does not really count here.  Not stated where this extra $10 came from.  NOT from his original m amount.
He has so far {{{3m/4}}} quantity of money.


Bought dvds:
The extra "$8 " does not count here.  It was also extra and we are not told from where.
Jason now retains  {{{(3m/4)(3/5)=9m/20}}}.


This quantity is  given as $130, so,...

{{{highlight(9m/20=130)}}}-----------the question asks for m.